Sampling Plans for Aflatoxin Analysis in Peanuts and Corn PDF Download

Author: Food and Agriculture Organization of the United Nations
Publisher: Food & Agriculture Org.
ISBN: 9789251033951
Category : Science
Languages : en
Pages : 84

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Author: FAO
Publisher:
ISBN:
Category :
Languages : en
Pages :

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Languages : en
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Eighteen lots of shelled corn were tested for aflatoxin contamination. The variability and distributional characteristics associated with the aflatoxin testing procedure were investigated. The total variance associated with testing shelled corn was estimated and partitioned into sampling, sample preparation, and analytical variances. All variances were found to increase with an increase in aflatoxin concentration. Using regression analysis, mathematical expressions were developed to model the relationship between aflatoxin concentration and the total, sampling, sample preparation, and analytical variances. The expressions for these relationships were used to estimate the variance for any sample size, subsample size, and number of analyses for a specific aflatoxin concentration. For example, testing a lot with 20 parts per billion (ppb) aflatoxin using a 2.5 lb sample, Romer mill and 50 g subsample, and HPLC analysis, the total, sampling, sample preparation, and analytical variances are 274.9 (CV=82.9%), 214.0 (CV=73.1%), 56.3 (CV=37.5%), and 4.6 (CV=10.7%), respectively. The percentage of the total variance for sampling, sample preparation, and analytical is 77.8, 20.5, and 1.7 %, respectively. Next, fifteen positively skewed distributions were each fitted to 18 empirical distributions of aflatoxin test results for shelled corn. The compound gamma distribution was selected to model the sample aflatoxin test results for shelled corn. The method of moments technique was chosen to estimate the parameters of the compound gamma distribution. Mathematical expressions were developed to calculate the parameters of the compound gamma distribution for any lot aflatoxin concentration and test procedure. Observed acceptance probabilities were compared to operating characteristic curves predicted from the compound gamma distribution and all 18 distributions of sample aflatoxin test results were found to lie within a 95% confidence band. Using the mean and variance relationships.

Author: Anders Sture Johansson
Publisher:
ISBN:
Category :
Languages : en
Pages : 102

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Keywords: Aflatoxin, Sampling plan, Corn, Compound gamma distribution.

Author: Food and Agriculture Organization of the United Nations
Publisher: Food & Agriculture Org.
ISBN: 9789251044773
Category : Food
Languages : en
Pages : 60

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The microbiological safety of food is becoming an increasingly important issue in many countries. A number of factors have contributed to this, including changes in methods of food production and processing, changing consumption patterns, greater consumer awareness of food safety issues and emerging and re-emerging pathogens. Also, the expansion of international trade in food has increased the risk of infectious agents being disseminated from the original point of production to locations thousands of miles away. In addressing this issue at the international level FAO and WHO convened a joint Expert Consultation on Risk Assessment of Microbiological Hazards in Foods from 17 to 21 July 2000 in Rome. The meeting specifically addressed risk assessment of Salmonella spp. in broilers and eggs and Listeria monocytogenes in ready-to-eat foods. This report summarizes its findings and includes advice and guidance on hazard characterization and exposure assessment of these pathogen-commodity combinations for consideration by FAO/WHO Member Countries and the Codex Alimentarius Commission.

Author: Joint FAO/WHO Expert Committee on Food Additives. Meeting
Publisher: Food & Agriculture Org.
ISBN: 9789251044742
Category : Business & Economics
Languages : en
Pages : 148

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On cover: Cyhalothrin, Cypermethrin, Dicyclanil, Flumequine, Ivermectin, Lincomycin, Melengestrol acetate, Permethrin, Trichlorfon.

Author: Hans P. Egmond
Publisher: Food & Agriculture Org.
ISBN: 9789251051290
Category : Algal toxins
Languages : en
Pages : 300

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This paper provides an extensive review of different aspects of five shellfish-poisoning syndromes (paralytic, diarrhoeic, amnesic, neurologic and azapiracid), as well as one fish-poisoning syndrome (ciguatera fish poisoning), and discusses in detail the causative toxins produced by marine organisms, chemical structures and analytical methods of the toxins, habitat and occurrence of the toxin-producing organisms, case studies and existing regulations. Based on this analysis, risk assessments are carried out for each of the toxins, and recommendations are elaborated to improve the management of these risks in order to reduce the harmful effect of these toxins on public health.

Author: Joint FAO/WHO Expert Committee on Food Additives. Meeting
Publisher: Food & Agriculture Org.
ISBN: 9789251045084
Category : Business & Economics
Languages : en
Pages : 260

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The specification of identity and purity of food additives, established by the Joint FAO/WHO Expert Committee on Food Additives (JECFA), are meant to identify substances that have been subject to biological testing, ensure they are of adequate purity for the safe use in food and to encourage good manufacturing practice. The report of the twenty third session covered 382 specifications of which 125 were new. Sixteen specifications were withdrawn.

Author: Mehdi Razzaghi-Abyaneh
Publisher: BoD – Books on Demand
ISBN: 9535109049
Category : Medical
Languages : en
Pages : 410

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This book is broadly divided into five sections and 17 chapters, highlighting recent advances in aflatoxin research from epidemiology to molecular genomics and control measures, biocontrol approaches, modern analytical techniques, economic concerns and underlying mechanisms of contamination processes. This book will update readers on several cutting-edge aspects of aflatoxins research with useful up-to-date information for mycologists, toxicologists, microbiologists, agriculture scientists, plant pathologists and pharmacologists, who may be interest to understanding of the impact, significance and recent advances within the field of of aflatoxins with a focus on control strategy.

Author: Food and Agriculture Organization of the United Nations
Publisher: Food & Agriculture Org.
ISBN: 9789251048863
Category : Business & Economics
Languages : en
Pages : 68

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On cover and title page: WHO food safety consultations.