CODEX STAN 209-1999 MAXIMUM LEVEL AND SAMPLING PLAN FOR TOTAL AFLATOXINS IN PEANUTS INTENDED FOR FUR
|
ID： |
6D79569448A54209B006EBC0FA348B4F |
|
文件大小(MB)： |
0.03 |
|
页数： |
5 |
|
文件格式： |
|
|
日期： |
2004-12-27 |
|
购买： |
文本摘录（文本识别可能有误，但文件阅览显示及打印正常，pdf文件可进行文字搜索定位）：
CODEX STAN 209-Rev.1 Page 1 of 5,MAXIMUM LEVEL AND SAMPLING PLAN FOR TOTAL AFLATOXINS IN PEANUTS,INTENDED FOR FURTHER PROCESSING,CODEX STAN 209-1999, Rev. 1-2001,INTRODUCTION,1. The sampling plan calls for a single 20 kg laboratory sample of shelled peanuts (27 kg of unshelled,peanuts) to be taken from a peanut lot (sub-lot) and tested against a maximum level of 15 micrograms per,kilogram (mg/kg) total aflatoxins.,2. This sampling plan has been designed for enforcement and controls concerning total aflatoxins in,bulk consignments of peanuts traded in the export market. To assist member countries in implementing the,Codex sampling plan, sample selection methods, sample preparation methods and analytical methods,required to quantify aflatoxin in bulk peanut lots are described in this document.,A. Definitions,Lot: an identifiable quantity of a food commodity delivered at one time and determined by,the official to have common characteristics, such as origin, variety, type of packing,packer, consignor or markings.,Sublot: designated part of a large lot in order to apply the sampling method on that designated,part. Each sublot must be physically separate and identifiable.,Sampling plan: is defined by an aflatoxin test procedure and an accept/reject limit. An aflatoxin test,procedure consists of three steps: sample selection, sample preparation and aflatoxin,quantification. The accept/reject limit is a tolerance usually equal to the Codex,maximum limit.,Incremental sample: a quantity of material taken from a single random place in the lot or sublot.,Aggregate sample: the combined total of all the incremental samples taken from the lot or sublot. The,aggregate sample has to be at least as large as the 20 kg laboratory sample.,Laboratory sample: smallest quantity of peanuts comminuted in a mill. The laboratory sample may be a,portion of or the entire aggregate sample. If the aggregate sample is larger than 20 kg, a,20 kg laboratory sample should be removed in a random manner from the aggregate,sample. The sample should be finely ground and mixed thoroughly using a process that,approaches as complete a homogenisation as possible .,Test portion: portion of the comminuted laboratory sample. The entire 20 kg laboratory sample,should be comminuted in a mill. A portion of the comminuted 20 kg sample is,randomly removed for the extraction of the aflatoxin for chemical analysis. Based upon,grinder capacity, the 20 kg aggregate sample can be divided into several equal sized,samples, if all results are averaged.,B. Sampling,Material to be Sampled,3. Each lot which is to be examined must be sampled separately. Large lots should be subdivided into,sublots to be sampled separately. The subdivision can be done following provisions laid down in Table 1 below.,4. Taking into account that the weight of the lot is not always an exact multiple of the weight of the,sublots, the weight of the sublot may exceed the mentioned weight by a maximum of 20 %.,CODEX STAN 209-Rev.1 Page 2 of 5,Table 1: Subdivision of Large Lots into Sublots for Sampling,Commodity Lot weight – tonne (T) Weight or number,of sublots,Number of,incremental,samples,Laboratory,Sample Weight,(kg),Peanuts 3 500,>100 and <500,3 25 and ￡ 100,>15 and <= 25,100 tonnes,5 sublots,25 tonnes,--1 sublot,100,100,100,100,20,20,20,20,Number of Incremental Samples for Lots of Less than 15 Tonnes,5. The number of incremental samples to be taken depends on the weight of the lot, with a minimum of,10 and a maximum of 100. The figures in the following Table 2 may be used to determine the number of,incremental samples to be taken. It is necessary that the total sample weight of 20 kg is achieved.,Table 2: Number of Incremental Samples to be Taken Depending on the Weight of the Lot,Lot weight tonnes – (T) N° of incremental samples,T￡ 1 10,1
……