1、BRITISH STANDARD CONFIRMED NOVEMBER1992 BS684-2.15: 1986 Methods of analysis of Fats and fatty oils Part2: Other methods Section2.15 Calculation of total saponifiable matter IMPORTANT NOTE. It is essential that BS684-0, which is published separately, be read in conjunction with this Section. UDC 665
2、.1.014:543:543.89BS684-2.15:1986 This BritishStandard, having been prepared under the directionof the Food and Agriculture Standards Committee,was published underthe authority of the BoardofBSI and comes into effect on 31 July1986 BSI11-1999 The following BSI references relate to the work on this st
3、andard: Committee referenceFAC/18 Draft for comment85/53925DC ISBN 0 580 15141 7 A British Standard does not purport to include all the necessary provisions of a contract. Users of British Standards are responsible for their correct application. Compliance with a British Standard does not of itself
4、confer immunity from legal obligations. Summary of pages This document comprises a front cover, an inside front cover, pagesi andii, pages1 and2, an inside back cover and a back cover. This standard has been updated (see copyright date) and may have had amendments incorporated. This will be indicate
5、d in the amendment table on the inside front cover. Amendments issued since publication Amd. No. Date of issue CommentsBS684-2.15:1986 BSI 11-1999 i Contents Page 1 Scope 1 2 Calculation 1 3 Test report 1 Publications referred to Inside back coverii blankBS684-2.15:1986 BSI 11-1999 1 1 Scope This Se
6、ction describes a method for the calculation of total saponifiable matter in animal and vegetable fats and oils. NOTEThe titles of the publications referred to in this Section are given in the inside back cover. 2 Calculation Calculate the total saponifiable matter as a percentage by mass using the
7、formula: 100(A + B + C + D) where A is the percentage by mass of water determined by the method described in BS684-1.16 for water contents of not less than0.5%(m/m) or by the method described inBS684-2.1 for water contents in the range0.05to1%(m/m) inclusive or by the method described in BS684-1.10;
8、 B is the percentage by mass of insoluble impurities determined by the method described in BS684-2.3 using the solvent appropriate to the fat under test; C is the percentage by mass of soap determined by the method described in BS684-2.5; D is the percentage by mass of unsaponifiable matter determin
9、ed by Method1 described in BS684-2.7. 3 Test report The test report shall indicate the methods used and the results obtained. It shall also mention any operating conditions not specified in this Section, or regarded as optional, as well as any circumstances that may have influenced the results. The
10、test report shall include all details required for the complete identification of the sample.2 blankBS684-2.15:1986 BSI 11-1999 Publications referred to BS684, Methods of analysis of fats and fatty oils. BS684-0, General introduction. BS684-1.10, Determination of moisture and other volatile matter.
11、BS684-1.16, Determination of water content: entrainment method. BS684-2.1, Determination of water by the Karl Fischer method. BS684-2.3, Determination of insoluble impurities. BS684-2.5, Determination of dissolved soap (alkalinity). BS684-2.7, Determination of unsaponifiable matter. BS684-2.15: 1986
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