{"id":379782,"date":"2024-10-20T03:03:59","date_gmt":"2024-10-20T03:03:59","guid":{"rendered":"https:\/\/pdfstandards.shop\/product\/uncategorized\/bs-iso-41342021\/"},"modified":"2024-10-26T05:31:26","modified_gmt":"2024-10-26T05:31:26","slug":"bs-iso-41342021","status":"publish","type":"product","link":"https:\/\/pdfstandards.shop\/product\/publishers\/bsi\/bs-iso-41342021\/","title":{"rendered":"BS ISO 4134:2021"},"content":{"rendered":"

This document specifies the spectrophotometer method and the light absorption microplate reader method for the determination of the free L-(+)-glutamic acid content of meat and meat products.<\/p>\n

This document is applicable to meat and meat products, including livestock and poultry products.<\/p>\n

PDF Catalog<\/h4>\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
PDF Pages<\/th>\nPDF Title<\/th>\n<\/tr>\n
2<\/td>\nNational foreword <\/td>\n<\/tr>\n
6<\/td>\nForeword <\/td>\n<\/tr>\n
9<\/td>\n1 Scope
2 Normative references
3 Terms and definitions
4 Principle <\/td>\n<\/tr>\n
10<\/td>\n5 Sampling
6 Preparation of test sample
7 Test method of spectrophotometer
7.1 Reagents <\/td>\n<\/tr>\n
11<\/td>\n7.1.6 Solution R123, the mixed solution of solution R1, solution R2 and solution R3. <\/td>\n<\/tr>\n
12<\/td>\n7.2 Apparatus
7.2.5 Constant temperature drying box.
7.2.6 pH-meter. <\/td>\n<\/tr>\n
13<\/td>\n7.3 Procedure
7.3.1 General
7.3.2 Test portion
7.3.3 Preparation of extract
7.3.4 Determination <\/td>\n<\/tr>\n
14<\/td>\n7.4 Calculation and results
7.4.1 Absorbance difference of L-(+)-glutamic acid standard solution <\/td>\n<\/tr>\n
15<\/td>\n7.4.2 Absorbance difference of L-(+)-glutamic acid test solution
7.4.3 Formula of linear regression of L-(+)-glutamic acid standard curve
7.4.4 L-(+)-glutamic acid concentration of the test solution
7.4.5 L-(+)-glutamic acid content of test sample <\/td>\n<\/tr>\n
16<\/td>\n7.5 Precision
7.5.1 Interlaboratory test
7.5.2 Repeatability
7.5.3 Reproducibility
7.6 Detection limit
8 Test method of light absorption microplate reader
8.1 Reagents
8.2 Apparatus <\/td>\n<\/tr>\n
17<\/td>\n8.3 Procedure
8.3.1 General
8.3.2 Extraction of L-(+)-glutamic acid in the test portion
8.3.3 Determination <\/td>\n<\/tr>\n
18<\/td>\n8.4 Calculation and results
8.4.1 Absorbance difference for L-(+)-glutamic acid standard solution
8.4.2 Absorbance difference for L-(+)-glutamic acid test solution <\/td>\n<\/tr>\n
19<\/td>\n8.4.3 Formula of linear regression for L-(+)-glutamic acid standard curve
8.4.4 L-(+)-glutamic acid concentration of the test solution
8.4.5 L-(+)-glutamic acid content of test sample <\/td>\n<\/tr>\n
20<\/td>\n8.5 Precision
8.5.1 Interlaboratory test
8.5.2 Repeatability
8.5.3 Reproducibility
8.6 Detection limit
9 Test report <\/td>\n<\/tr>\n
21<\/td>\nAnnex A (informative) Safety practices <\/td>\n<\/tr>\n<\/table>\n","protected":false},"excerpt":{"rendered":"

Meat and meat products. Determination of L-(+)-glutamic acid content. Reference method<\/b><\/p>\n\n\n\n\n
Published By<\/td>\nPublication Date<\/td>\nNumber of Pages<\/td>\n<\/tr>\n
BSI<\/b><\/a><\/td>\n2021<\/td>\n24<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n","protected":false},"featured_media":379789,"template":"","meta":{"rank_math_lock_modified_date":false,"ep_exclude_from_search":false},"product_cat":[967,2641],"product_tag":[],"class_list":{"0":"post-379782","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-67-120-10","7":"product_cat-bsi","9":"first","10":"instock","11":"sold-individually","12":"shipping-taxable","13":"purchasable","14":"product-type-simple"},"_links":{"self":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product\/379782","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/types\/product"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media\/379789"}],"wp:attachment":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media?parent=379782"}],"wp:term":[{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_cat?post=379782"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_tag?post=379782"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}