نتایج جستجو برای: agricultural commodities
تعداد نتایج: 106982 فیلتر نتایج به سال:
Global trade of agricultural commodities (e.g., animal feed) requires monitoring for fungal toxins. Also, little is known about masked and emerging toxins and metabolites. 1926 samples from 52 countries were analysed for toxins and metabolites. Of 162 compounds detected, up to 68 metabolites were found in a single sample. A subset of 1113 finished feed, maize and maize silage samples containing...
guided by the principle that Americans should not be hungry or malnourished because they cannot afford a nutritious diet. Food assistance programs help to provide food and meet nutritional requirements for individuals and households that are vulnerable due to low income or other circumstances. Originally initiated in the early 1930s, with the primary objective to dispose of surplus agricultural...
It is estimated that 25 to 50% of the crops harvested worldwide are contaminated with mycotoxins. Because of the toxic and carcinogenic potential of mycotoxins, there is an urgent need to develop detection methods that are rapid and highly specific. The highly advanced physico-chemical methods for the analysis of mycotoxins in use, have the disadvantage that highly sophisticated clean-up and/or...
An enzyme-linked immunosorbent assay (ELISA) was developed for azadirachtin (aza), a biopesticide from the neem tree (Azadirachta indica A. Juss). The immunogen was synthesized by epoxidation using the furan ring in the aza molecule. Rabbits were immunized with either bovine serum albumin (BSA)-azadirachtin or ovalbumin (OA)-azadirachtin conjugate. Evaluation of the antisera by antibody capture...
Most debates about the role of tariff cuts on the level of employment and rate of wages in labor market have come out of well-known Hecscher â Ohlin and Stopler â Samuelson (HOS) theorems. Considering the fact that we have divided the workforce into skilled and unskilled labors the present paper assesses the impacts of tariff cuts on labor market indicators in Iran. To address these issues...
KOPTA DANIEL: Impact of the structure of agricultural production to the fi nancial health of farms. Acta Universitatis Agriculturae et Silviculturae Mendelianae Brunensis, 2013, LXI, No. 7, pp. 2317–2325 The fi rst part of the paper deals with the infl uence of individual commodities on the profi tability and risks of farms. Production structure was given thought share of twelve basic crops in ...
Aflatoxins are extremely potent natural carcinogens and a major food safety concern because of potential contamination of food commodities. Threshold levels set by the U. S. Food and Drug Administration for aflatoxins in foods for domestic consumption are less than 20 parts/ billion (ppb). However, the European Union (EU) and Japan have set threshold levels at less than 4 ppb. These low toleran...
This study aimed to prepare the basic components of aflatoxin B1 (AfB1) radioimmunoassay (RIA) technique using liquid phase to measureAfB1 in agricultural commodities. These components were polyclonal antibody (anti-AfB1), I-labelledAfB1 and aflatoxin B1 standards.Anti-AfB1 polyclonal was raised by immunizing six white New-Zealand rabbits with aflatoxin B1bovine serum albumin (AfB1-BSA) conjuga...
ongress has long evinced interest in the effectiveness of the agricultural research and extension system. It has placed particular stress on high-priority national issues that it has previously identified, and on securing research results and applications (outcomes) that address those issues. Accordingly, Congress took the strong step in FACTA of specifying purposes that “[f]ederally funded agr...
One of humanity's major challenges of the 21st century will be meeting future food demands on an increasingly resource constrained-planet. Global food production will have to rise by 70 percent between 2000 and 2050 to meet effective demand which poses major challenges to food production systems. Doing so without compromising environmental integrity is an even greater challenge. This study look...
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