Toxicity study of fungal contaminated brewer’s spent grain in rats

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Journal name: World Journal of Pharmaceutical Research
Original article title: Toxicity study of fungal contaminated brewer’s spent grain in rats
The WJPR includes peer-reviewed publications such as scientific research papers, reports, review articles, company news, thesis reports and case studies in areas of Biology, Pharmaceutical industries and Chemical technology while incorporating ancient fields of knowledge such combining Ayurveda with scientific data.
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Original source:

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Author:

Jagadeesh S. C., Shridhar N. B., Sunilchandra U., Ravikumar C., Manjunatha S. S., Pradeep B. S., Niranjan D., Vinuta M. H., Mohan B. R. and Manjunath Uppar


World Journal of Pharmaceutical Research:

(An ISO 9001:2015 Certified International Journal)

Full text available for: Toxicity study of fungal contaminated brewer’s spent grain in rats

Source type: An International Peer Reviewed Journal for Pharmaceutical and Medical and Scientific Research

Doi: 10.20959/wjpr202311-28873


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Summary of article contents:

Introduction

The study investigated the toxicity associated with fungal contaminated brewer’s spent grain (BSG) when ingested by rats. Brewer’s spent grain is a by-product from the brewing industry, often used as animal fodder, but its contamination by fungi can lead to illness in livestock. In particular, the presence of mycotoxins produced by fungi poses significant health risks. The researchers aimed to identify the fungal species in the contaminated grain, investigate the impacts on rats after ingestion, and characterize the toxic effects through biochemical and histopathological observations.

Fungal Identification and Mycotoxin Analysis

The study specifically identified several fungal species from the contaminated brewer's spent grain, most notably Rhizopus oryzae, Aspergillus flavus, and Aspergillus nomius. Using High-Performance Liquid Chromatography with Fluorescence Detection (HPLC-FLD), the researchers detected various mycotoxins, including Aflatoxins B1, B2, G1, and G2 in the culture filtrates of A. flavus and A. nomius. These findings highlight the potential for significant contamination in BSG, necessitating careful monitoring and management of such agricultural by-products to prevent adverse effects on animals consuming them.

Toxicity Study Methodology

The toxicity assessment involved administering mixed fungal culture filtrates through oral gavage to Wistar albino rats over a period of 28 days. The rats were divided into four groups with differing dosages of the fungal culture: a control group, a low-dose, a medium-dose, and a high-dose group. The study employed various biochemical parameters to measure liver and kidney function, along with hematological parameters to evaluate the overall health effects of the fungal toxins on the rats. Observations of body weight, clinical signs, and potential health consequences like liver damage were systematically recorded.

Biochemical and Histopathological Findings

The results from the study demonstrated significant health impacts from the fungal cultures in all treated groups, revealing increased serum levels of alanine aminotransferase (ALT) and aspartate aminotransferase (AST), indicative of hepatotoxicity. Further examinations showed a decline in total leucocyte count and erythrocyte count, suggesting immunotoxicity and potential anemia. Pathological assessments documented gross and histopathological changes such as congestive changes in various organs, intestinal hemorrhages, and degeneration, corroborating the toxic nature of the ingested material.

Conclusion

This research underscores the critical risks associated with the consumption of fungal contaminated brewer’s spent grain by livestock, emphasizing the need for screening and management practices in animal feeding. The findings of hepatotoxicity, nephrotoxicity, and immunotoxicity suggest that mycotoxins from fungal contaminated feed can lead to severe health detriments in rats, which may reflect similar risks for cattle and other animals. Future studies are recommended to explore the natural disease processes caused by such toxins in large animals, considering varying factors that may affect contamination and toxicity.

FAQ section (important questions/answers):

What was the main objective of the toxicity study?

The study aimed to evaluate the toxicity of fungal contaminated brewer's spent grain in rats to understand its impact on health due to mycotoxin presence.

Which fungi were isolated from the brewer's spent grain?

The identified fungi associated with the contaminated brewer's spent grain were Rhizopus oryzae, Aspergillus flavus, and Aspergillus nomius.

What doses were used in the toxicity study on rats?

Rats in the study received mixed fungal culture filtrates at low (0.5 ml/100 g), medium (1 ml/100 g), and high (2 ml/100 g) doses over 28 days.

What biochemical changes were observed in the treated rats?

Significant increases in ALT, AST, blood urea nitrogen, and creatinine levels indicated liver and kidney damage in rats administered fungal culture filtrates.

What were some clinical signs observed in the rats?

Rats exhibited depression, weakness, reduced feed intake, water intake, diarrhea, and significant weight loss after being gavaged with toxic fungal filtrates.

What conclusions were drawn from the study's findings?

The study concluded that mixed fungal culture filtrates showed toxicity in rats, which could be attributed to the presence of mycotoxins and toxic metabolites.

Glossary definitions and references:

Scientific and Ayurvedic Glossary list for “Toxicity study of fungal contaminated brewer’s spent grain in rats”. This list explains important keywords that occur in this article and links it to the glossary for a better understanding of that concept in the context of Ayurveda and other topics.

1) Rat:
Rats serve as a standard model organism in toxicological research due to their biological similarities to humans, allowing insights into the effects of substances on health. The study involving rats assesses the impact of mycotoxins from contaminated brewer's spent grain to understand toxicity mechanisms relevant to animal and human health.

2) Medium:
The term 'medium' refers to an intermediate or average dosage used in the experiment involving mixed fungal culture filtrates. It is significant as it helps scientists determine the dose-response relationship and identify potential toxicity effects that vary based on exposure levels, guiding further assessments of safety and health risks.

3) Study (Studying):
Studying encompasses the systematic investigation and analysis of subjects to uncover insights and build knowledge. In this research, studying the effects of mycotoxins contributes to understanding their health implications on animals and informs subsequent safety practices.

4) Animal:
The phrase 'the animal' specifies the subject of the study. In this context, it refers to the rats, which were chosen for their relevance to human health research. Understanding the reactions and outcomes observed in these animals helps extrapolate findings to other species in the field.

5) Toxicity:
Toxicity describes the degree to which substances can harm living organisms. In this study, evaluating the toxicity of mycotoxins present in contaminated brewer's spent grain is essential for determining potential health risks, including organ damage and diseases in both animals and humans arising from contaminated feed.

6) Blood:
In this research, 'blood' refers to the fluid analyzed to assess various biochemical parameters impacted by mycotoxin exposure. Evaluating blood samples is crucial for understanding physiological changes, including liver and kidney function, which indicate the health status of the rats subjected to toxic substances.

7) Table:
The term 'table' is often used to present organized data clearly, such as laboratory results or statistical analyses. In this study, tables summarize findings regarding biochemical and hematological changes, aiding in the comparison and interpretation of the health impacts of different doses of mycotoxins.

8) Sign:
In scientific research, 'sign' refers to observable indicators or effects resulting from an experimental intervention. Analyzing signs of toxicity, such as weight loss or altered blood parameters in rats, helps researchers comprehend the harmful effects of mycotoxins and guide further investigations into their health impacts.

9) Observation:
Observations include systematic recording of data concerning animal health, behavior, and physiological changes during the experiment. They provide insight into the effects of treatments and are fundamental for drawing conclusions about mycotoxin toxicity and informing subsequent agricultural practices.

10) Species:
The term 'species' pertains to the different types of organisms studied, specifically the fungi implicated in toxicity. Identifying and understanding various species of fungi in contaminated grains is essential for assessing their mycotoxicology and developing targeted prevention measures in food and feed safety.

11) Disease:
Diseases are pathological conditions that can arise from exposure to harmful substances, such as mycotoxins. Understanding the diseases associated with contaminated feed promotes the development of preventative measures, thereby enhancing health and productivity in livestock populations.

12) Swelling:
Swelling reflects the body's response to injury or irritation, potentially indicating inflammation or toxicity in organs such as the liver or kidneys. In assessing toxicity effects, monitoring for signs of swelling helps establish the extent of organ damage from mycotoxin exposure.

13) Food:
The phrase 'the food' highlights its significance in the study, specifically referring to the brewer’s spent grain consumed by the rats. Quality assessment of food sources is crucial for maintaining animal health and preventing mycotoxin-related illnesses.

14) Water:
The term 'water' highlights a crucial element in the animal's diet and overall health. Adequate hydration is essential for physiological functioning, particularly when assessing the effects of toxic substances, as water intake can influence the severity of mycotoxin effects in the experimental subjects.

15) Bile:
Bile is a digestive fluid produced by the liver, essential for fat digestion and absorption. Changes in bile composition or production can indicate liver health or damage, particularly in toxicological studies assessing the effects of mycotoxins on liver function and overall metabolism.

16) Milk:
The term 'milk' refers to a significant product of lactating animals, often impacted by feed quality. Monitoring the effects of mycotoxin exposure on milk production and quality is crucial for dairy industries, guiding practices to ensure consumer safety and animal welfare.

17) Pharmacology:
Pharmacology involves the study of drug effects on biological systems. Understanding pharmacological interactions of mycotoxins is vital for developing treatments or preventative measures against poisoning in animals and humans, making it an essential aspect of the research focus.

18) Toxicology:
Toxicology is the scientific discipline that investigates the effects of chemical, biological, or physical agents on living organisms. It plays a critical role in understanding the toxicity of mycotoxins, informing risk assessments and safety standards in animal feed and agricultural practices.

19) Pur:
The term 'poor' indicates suboptimal conditions, particularly in relation to animal health or food quality. Recognizing poor quality feed due to fungal contamination is critical for preventing health issues and optimizing livestock performance and sustainability in agriculture.

20) Activity:
The term 'activity' describes biological responses or behaviors observed during the experiment. Assessing various activities of the rats helps in determining the toxic effects of mycotoxins and understanding their overall impact on physiological and behavioral health.

21) Field:
Fields refer to agricultural landscapes where crops are grown and livestock are raised. Understanding the dynamics of toxin exposure in these environments is crucial for ensuring the health of animals and managing agricultural risks.

22) Paddy:
Paddy refers to cultivated rice plants in their original, unharvested form. Understanding the potential for mycotoxin contamination in paddy straw or grains is essential as it may affect animal feed practices, impacting livestock health and agricultural yield.

23) Straw:
Straw serves as a common feed component in livestock diets. Recognizing the risks of mycotoxin contamination in straw is important for ensuring animal health, preventing toxic effects during feed consumption, and maintaining overall agricultural productivity.

24) Male:
The term 'male' identifies the sex of the rats used in the study, which is relevant for assessing any sex-specific responses to mycotoxin exposure. This understanding can contribute to better tailored interventions and management strategies in animal health.

25) Karnataka:
Karnataka is a state in India where this research was conducted. The local agricultural practices and environmental factors influence mycotoxin prevalence in livestock feeds, highlighting the need for context-specific studies addressing animal health and food safety in this region.

26) Quality:
Quality indicates the standard of the feed provided to animals. Understanding and ensuring high-quality feed free from toxins is crucial for safeguarding animal health and productivity, which directly affects economic and nutritional outcomes in agriculture.

27) Harvesting (Harvest):
Harvest refers to the period when crops are collected. Effective management of harvest practices is essential to minimize mycotoxin contamination, as poorly handled grains during harvest can lead to increased fungal growth and subsequent health risks for consuming animals.

28) Nature:
Nature encompasses the broader ecological context in which fungi and mycotoxins interact with crops. Understanding the natural environment, including its climatic conditions and impact on contamination levels, supports the development of sustainable agricultural practices that protect animal health.

29) Farmer:
Farmers are vital participants in the agricultural sector, directly impacting livestock feeding practices. Educating farmers on the risks of fungal contamination in feeds and implementing preventive measures is crucial for maintaining livestock health and improving economic viability in farming.

30) Edema (Oedema):
Oedema, another term for edema, indicates fluid build-up causing swelling in tissues. Observing oedema in experimental subjects assists in understanding the pathological effects of toxic substances, highlighting the need to assess the degree of toxicity present in contaminated feeds.

31) Sara (Shara):
SARA stands for sub-acute rumen acidosis, a condition observed in livestock due to improper diet or feed contamination. Understanding the impact of mycotoxin-laden feed on SARA prevalence in animals is essential for developing management strategies and improving animal welfare.

32) Discussion:
Discussion centers around interpreting the findings from the study, integrating observations and results with existing knowledge to develop insights. This process helps contextualize the impacts of mycotoxin exposure on animal health and informs future research and agricultural practices.

33) Depression:
Depression, as a clinical sign, reflects a state of decreased physiological functioning or mood in animals. Monitoring for depression in response to mycotoxin exposure provides insight into its impact on animal welfare and informs strategies to mitigate risks in livestock.

34) Buffalo (Buffaloes):
Buffaloes are significant livestock animals, often susceptible to the same mycotoxins affecting other livestock. Studying their health in the context of mycotoxin exposure helps shape comprehensive strategies for the management of livestock health and food safety in agricultural practices.

35) Suffering:
Sufferings refer to the adverse effects experienced by animals due to health issues, including those caused by mycotoxin exposure. Acknowledging animal sufferings fosters more humane treatment approaches and drives initiatives to improve animal welfare in agricultural practices.

36) Durga (Dur-ga):
Durga is likely a reference to a specific location or community in Karnataka, indicating the regional context of the study. Understanding local agricultural practices and the prevalence of mycotoxin exposure is critical for addressing animal health issues effectively in these communities.

37) Tree:
In a broader ecological context, 'tree' could symbolize the interconnectedness of different species and their environments. Studying various organisms, including fungi, in relation to their habitats helps improve understanding of ecological balance and the implications of contamination on agricultural practices.

38) Hull:
Hull refers to the outer covering of grains, which can harbor mycotoxins along with the kernels. Understanding the contamination potential in hulls informs proper feed management and quality control measures to safeguard animal health.

39) Post:
Post refers to the time period or events following a certain action, such as harvesting or feeding. Evaluating post-harvest management practices is critical in preventing mycotoxin contamination and ensuring safe feed for livestock.

40) Inflammation:
Inflammation is a biological response to harmful stimuli, often indicating tissue damage or infection. Recognizing inflammation in the context of mycotoxin exposure supports the assessment of health risks and informs strategies for protecting animal well-being.

41) Performance:
Performance refers to the effectiveness of animals in terms of health, productivity, and overall welfare. Evaluating the impacts of mycotoxin exposure on livestock performance helps shape practices that enhance health outcomes and optimize livestock management.

42) Agriculture:
Agriculture is the broader field encompassing farming practices, feed production, and animal husbandry. Understanding toxicological impacts of mycotoxins within agriculture is essential for promoting safe practices and ensuring the health of farmed animals.

43) Relative:
Relative compares the findings of different groups in the study. This comparative analysis is essential to assess the toxicity effects of varying doses in rats and informs further research into understanding dose-response relationships in toxicology.

44) Reason:
The phrase 'the reason' denotes the underlying causes for conducting the study, emphasizing the need to examine mycotoxin toxicity in livestock. Examining these reasons enables focused inquiry into preventive measures and promotes better farming practices for animal well-being.

45) Insect:
Insects can play a role in the spread of fungal spores and contaminated feed. Understanding the relationship between insect activity and mycotoxin development allows for better pest management strategies, ultimately protecting livestock health and ensuring safe agricultural practices.

46) Barley:
Barley is a common cereal grain that can be subject to fungal contamination. Recognizing the potential for mycotoxin presence in barley-based feeds highlights the necessity for monitoring and management of safe feed resources in animal husbandry.

47) Glass:
In a laboratory setting, glass wares are essential for conducting experiments reliably. Ensuring proper cleaning and sterilization of glass equipment is crucial for maintaining the integrity of experimental results and preventing contamination in scientific research.

48) Honey:
Honey is often studied for its potential health benefits. In the context of this research, exploring the protective effects of honey could offer insights into mitigating the impacts of aflatoxin toxicity in animal models.

49) Genu:
The term ‘genu’ seems to refer to genuineness or authenticity, highlighting the importance of ensuring that feed is free from contamination. This is essential to safeguard animal health and avoid adverse effects caused by mycotoxins in agriculture.

50) Crop:
A crop is a cultivated plant typically grown for food or feed. Understanding the vulnerability of crops to fungal contamination is vital for maximizing yield and quality while safeguarding against health risks in livestock due to mycotoxins.

51) Drug:
A drug is a chemical substance used to treat or prevent disease. In relation to this study, understanding the potential for drug interactions with mycotoxins informs treatment options for affected animals and contributes to veterinary medical practices.

52) Diet:
Diet encompasses the nutritional composition of animals' feed, including the presence of potentially harmful substances. Proper evaluation of diets is critical to preventing mycotoxin exposure and ensuring optimal health and productivity in livestock.

53) Life:
Life refers to the biological processes of living organisms. Understanding the interactions between mycotoxins and life processes is essential for assessing the overall health impacts on animals and forming a holistic view of health management in agriculture.

54) Animal disease:
Animal disease refers to specific health issues affecting individual animals that can arise from toxic exposures. Understanding each animal disease's mechanics and impacts is essential for developing effective prevention and treatment protocols in veterinary practice.

55) Manjunatha:
Manjunatha is likely a reference to an individual involved in the research, possibly a collaborator or author. Recognizing contributions acknowledges the collaborative nature of scientific investigations, emphasizing the importance of teamwork in addressing complex issues like mycotoxin toxicity.

56) Salivation:
Salivation refers to the production of saliva, which can be indicative of various health conditions in animals. Monitoring changes in salivation can provide additional insights into the physiological effects of mycotoxin exposure and assist in understanding animal health responses.

57) Science (Scientific):
Science denotes the systematic study of the natural world, emphasizing empirical evidence and experimentation. In this research, scientific methods provide a framework for studying mycotoxin toxicity, guiding safe practices in animal feed management.

58) Similarity:
Similarity indicates the degree to which different subjects exhibit comparable traits or responses. Recognizing similarities in toxicity responses among various animals can inform veterinarians and agriculturists on potential risks and management strategies in livestock and agriculture.

59) Substance:
Substance refers to the specific biological compounds, like mycotoxins, being studied for their effects. Evaluating various substances and their toxicity helps establish safe levels for animal consumption, which is crucial for effective feed management.

60) Turmeric:
Turmeric is a plant known for its potential health benefits, specifically anti-inflammatory properties. Researching turmeric's effects may provide insights into mitigating the toxicity of mycotoxins in livestock, promoting healthier alternatives in animal feed.

61) Dividing:
Dividing relates to categorizing or classifying components in the study. Dividing subjects into groups for experimentation allows researchers to compare effects clearly, aiding the understanding of how different doses impact health outcomes.

62) Pregnant:
Pregnant refers to the state of animals carrying offspring. Understanding the effects of mycotoxin exposure on pregnant animals is crucial for ensuring maternal and fetal health, influencing reproductive management practices in livestock.

63) Hygiene (Hygienic):
Hygienic practices are essential in agricultural settings to ensure food safety and animal health. Emphasizing hygienic conditions helps prevent feed contamination with harmful substances, safeguarding the well-being of livestock and the quality of food products.

64) Village:
Village denotes rural areas where agricultural practices thrive. Recognizing the importance of local conditions helps address specific challenges related to mycotoxin contamination in animal feed and informs targeted interventions.

65) Surface:
Surface refers to the outermost layer of materials where contamination occurs. Monitoring surfaces involved in feed production is essential to preventing mycotoxin exposure, ensuring animal health, and maintaining agricultural standards.

66) Chennai:
Chennai is a city in India, potentially referencing a location involved in the study, possibly for laboratory analyses or collaborations. Local resources like Chennai enhance research capabilities and contribute to scientific advancements in the agricultural sector.

67) Powder:
Powder suggests a finely ground substance, which can be relevant in the context of feed additives or medicinal formulations. Understanding how powders interact or contribute to toxicity informs safe practices in livestock management.

68) India:
India is the country where this research is conducted. The agricultural practices, climate conditions, and economic factors in India significantly influence the management of mycotoxins and the health of livestock, making it a relevant area of study.

69) Cage:
Cage denotes the enclosure used to keep laboratory animals. The design and management of cages are essential for maintaining animal welfare during studies, ensuring accurate representation of their health status in research findings.

70) Pune:
Pune is a city in India, potentially indicating a location for conducting research or collaboration. Resources and institutions in Pune contribute to scientific inquiry and advancements in agricultural practices related to animal health.

71) Hair:
Hair could refer to the external appearance of the animals, which may provide visual clues regarding their health status. Analyzing changes in external characteristics like coat condition can supplement findings related to internal health issues.

72) Wind:
Wind can play a role in dispersing fungal spores, thus influencing contamination levels in agricultural settings. Understanding the effects of environmental factors like wind assists in managing mycotoxin risks associated with livestock feeding.

73) Hand:
Hand signifies human involvement in the management of agricultural practices. Understanding the role of farmers and handlers in preventing contamination is critical for ensuring safe feeding practices and protecting animal health.

74) Soil:
Soil is the foundation for agricultural production, impacting the growth of crops susceptible to fungal contamination. Health assessments of soil are essential for preventing mycotoxins in feed and maintaining sustainable agricultural practices.

75) Cow:
Cows, like buffaloes, are vital agricultural animals commonly affected by feed quality. Understanding the health impacts of mycotoxin exposure on cows informs practices to safeguard their well-being and enhance overall productivity in livestock management.

Other Science Concepts:

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Discover the significance of concepts within the article: ‘Toxicity study of fungal contaminated brewer’s spent grain in rats’. Further sources in the context of Science might help you critically compare this page with similair documents:

Dyspnea, Anorexia, Symbiotic relationship, Environmental factor, Hepatotoxicity, Hematological Parameters, Clinical observation, Toxicity study, Serum biochemical parameters, Total leukocyte count, Histopathology, Packed cell volume, Nephrotoxicity, Repeated dose 28-day oral toxicity study, Haematological parameters, Cardiotoxicity, Blood Urea Nitrogen, Alanine Aminotransferase, Aspartate Aminotransferase, Aspergillus flavus, Biochemical parameter, Total erythrocyte count, Aflatoxin, Wistar albino rat.

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