Detail of GB/T 8235-2019

Introduction of GB/T 8235-2019

Codeofchina.com is in charge of this English translation. In case of any doubt about the English translation, the Chinese original shall be considered authoritative. This standard is drafted in accordance with the rules given in GB/T 1.1-2009. This standard replaces GB 8235-2008 Flaxseed oil. The following main technical changes have been made with respect to GB 8235-2008: ——The scope is modified (see clause 1; clause 1 of Edition 2008); ——Some normative references are modified (see clause 2; clause 2 of Edition 2008); ——Some terms and definitions are modified (see 3.1 and 3.2; 3.1 and 3.3 of Edition 2008); ——The term and definition of "finished product of flaxseed oil” are added (see 3.3); ——Some terms and definitions are deleted (see 3.2, 3.4, 3.5, 3.6, 3.7, 3.8, 3.9, 3.10, 3.11, 3.12, 3.13, 3.14, 3.15, 3.16, 3.17, 3.18, 3.19 and 3.20 of Edition 2008); ——The classification is modified (see clause 4; clause 4 of Edition 2008); ——The quality requirements are modified (see 5.1 and 5.2; 5.1 and 5.2 of Edition 2008); ——The sales requirements are added (see 9.4). This standard was proposed by the National Food and Strategic Reserves Administration. This standard is under the jurisdiction of SAC/TC 270 National Technical Committee on Grain and Oils of Standardization Administration of China. The previous editions of this standard are as follows: ——GB/T 8235-1987 and GB/T 8235-2008. Flaxseed oil 1 Scope This standard specifies the terms and definitions, classification, quality requirements, inspection methods and rules, labeling and identification, as well as packaging, storage, transport and sale of flaxseed oil. This standard is applicable to crude flaxseed oil and finished product of flaxseed oil. The quality indexes of crude flaxseed oil are only applicable to the trade of crude flaxseed oil. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. GB/T 191 Packaging - Pictorial marking for handling of goods GB/T 5009.37 Method for analysis of hygienic standard of edible oils GB 5009.168 National food safety standard - Determination of fatty acid in foods GB 5009.229 National food safety standard - Determination of acid value in foods GB 5009.236 National food safety standard - Animal and vegetable fats and oils - Determination of moisture and volatile matter GB/T 5490 Inspection of grain and oils - General rules GB/T 5524 Animal and vegetable fats and oils - Sampling GB/T 5525 Vegetable fats and oils - Method for identification of transparency, odor and flavor GB/T 5526 Inspection of vegetable oils - Methods for determination of specific gravity GB/T 5527 Animal and vegetable fats and oils - Determination of refractive index GB/T 5532 Animal and vegetable fats and oils - Determination of iodine value GB/T 5534 Animal and vegetable oils and fats－Determination of saponification value GB 7718 National food safety standard - General standard for the labeling of prepackaged foods GB/T 15688 Animal and vegetable fats and oils - Determination of insoluble impurities content GB/T 17374 Sales package of edible vegetable oil GB 28050 National food safety standard - General rules for nutrition labeling of prepackaged foods GB/T 30354 Criterion for bulk transportation of edible vegetable oils   3 Terms and definitions For the purposes of this document, the following terms and definitions apply. 3.1 flaxseed oil oils made from flaxseed 3.2 crude flaxseed oil flaxseed oil obtained from flaxseed by squeezing, leaching and other ways that meets the crude oil quality indexes in this standard and national food safety standards and is not directly edible 3.3 finished product of flaxseed oil edible oil products made from flaxseed or crude flaxseed oil that meet the finished oil quality indexes in this standard and national food safety standards 4 Classification Flaxseed oil is classified into crude flaxseed oil and finished product of flaxseed oil. 5 Quality requirements 5.1 Basic composition and main physical parameters See Table 1 for basic composition and main physical parameters of flaxseed oil.   Table 1 Basic composition and main physical parameters of flaxseed oil Item Index Refractive index (n20) 1.4785~1.4840 Relative density ( ) 0.9276~0.9382 Iodine value (counted by I2) /(g/100g) 165~208 Saponification value (counted by KOH)/(mg/g) 188~195 Main fatty acid composition/% Palmitic acid (C16:0) 3.7~7.9 Stearic acid (C18:0) 2.0~7.0 Oleic acid (C18:1) 9.5~30.0 Linoleic acid (C18:2) 10.0~20.0 α-linolenic acid (C18:3) 45.0~70.0 5.2 Quality indexes 5.2.1 Quality index of crude flaxseed oil See Table 2 for the quality index of crude flaxseed oil. Table 2 Quality index of crude flaxseed oil Item Quality index Odor and flavor With the odor and flavor inherent of crude flaxseed oil, and free from unpleasant odor Content of moisture and volatile matter/% ≤ 0.50 Content of insoluble impurity/% ≤ 0.50 5.2.2 Quality index of finished product of flaxseed oil See Table 3 for quality index of finished product of flaxseed oil.

Contents of GB/T 8235-2019

Foreword i 1 Scope 2 Normative references 3 Terms and definitions 4 Classification 5 Quality requirements 6 Inspection methods 7 Inspection rules 8 Labeling and identification 9 Packaging, storage, transport and sale