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濃縮蘋果汁與飲料檢測項目報價???解決方案???檢測周期???樣品要求? |
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本標(biāo)準(zhǔn)規(guī)定了因食品風(fēng)味濃郁或物理狀態(tài)(粘度、顏色、粉狀度等)原因而不能直接進(jìn)行感官分析的樣品制備準(zhǔn)則。 本標(biāo)準(zhǔn)尤其適用于具有濃郁氣味產(chǎn)品(如香料和調(diào)味品)和特別濃的液體產(chǎn)品(糖漿和某些提取液)。 本標(biāo)準(zhǔn)不適用于傳統(tǒng)以熬、煮、泡制的方式消費(fèi)的飲料(如茶、咖啡、藥用植物)。
本標(biāo)準(zhǔn)規(guī)定了濃縮蘋果汁的術(shù)語和定義、產(chǎn)品分類、要求、試驗方法、檢驗規(guī)則、標(biāo)志、包裝、運(yùn)輸和貯存。本標(biāo)準(zhǔn)適用于3.1所定義的濃縮蘋果汁。
本標(biāo)準(zhǔn)規(guī)定了預(yù)防和降低蘋果汁及其他飲料的蘋果汁配料中展青霉素污染的操作規(guī)范。本標(biāo)準(zhǔn)適用于蘋果的農(nóng)業(yè)生產(chǎn)中種植、采收、運(yùn)輸、采后處理、貯藏、貯藏后分選等操作過程,以及蘋果在果汁加工中運(yùn)輸、檢查、榨汁、果汁包裝、包裝后處理、果汁質(zhì)量評估等操作過程。
本標(biāo)準(zhǔn)規(guī)定了蘋果醋飲料的術(shù)語和定義、技術(shù)要求、試驗方法、檢驗規(guī)則和標(biāo)簽、包裝、運(yùn)輸、貯存。本標(biāo)準(zhǔn)適用于本標(biāo)準(zhǔn)3.2所定義的蘋果醋飲料。
The principle of the method specified is extraction of patulin from a test portion using ethyl acetate followed by partitioning of the extract with aqueous sodium carbonate solution, qualitative and quantitative determination of the patulin content by means of high-performance liquid chromatography using an ultraviolet detector. The limit of detection is 10 鎔/l, based on 5 ml of ready-to-drink apple juice.
The principle of the method specified is extraction of patulin in a mixture of ethyl acetate and chloroform (3:2 by volume), filtration of the extract on a silica-gel column and qualitative and quantitative determination by means of two-directional thin-layer chromatography. The spots are developed using a 3-methyl-2-benzothiazoline hydrazone (MBTH) hydrochloride solution. The limit of detection is 25 鎔/l, based on 50 ml of ready-to-drink apple juice. The more precise method of analysis is HPLC.
The part of ISO 8128 specifies a method using thin layer. Chromatography for the determination of the patulin content of apple juice, apple juice conconcentrates and drinks containing apple juice
Настоящий стандарт устанавливает метод определения содержания патулина в яблочном соке, концентрированных яблочных соках и напитках, со
Настоящий стандарт устанавливает метод определения содержания патулина в яблочных соках, концентрированных яблочных соках и напитках, с