方案摘要
方案下载应用领域 | 食品/农产品 |
检测样本 | 液体乳 |
检测项目 | 营养成分>粗纤维, 脂肪, 蛋白质 |
参考标准 | GB/T 5009.6 食品中脂肪的测定 |
对不同农场采集的山羊原奶理化特性的比较研究A Comparative Study on Physicochemical Characteristics of Raw Goat Milk Collected from Different Farms 冻干山羊原奶样品的总脂肪含量采用格哈特公司自动酸水解系统 海卓森Hydrotherm+全自动快速索氏提取系统 索克森Soxtherm进行测定。总氮含量采用格哈特公司全自动消化系统 凯道森Kjeldatherm 消化样品,然后格哈特公司 全自动定氮仪VAPODEST 500 Carousel自动蒸馏和滴定。,对用12%(w/v)三氯乙酸沉淀后的牛奶滤液样品进行非蛋白氮分析。牛奶中的蛋白质含量计算为总N与非蛋白N的差值,将N的最终值转换为相应蛋白6.38倍。
对不同农场采集的山羊原奶理化特性的比较研究A Comparative Study on Physicochemical Characteristics of Raw Goat Milk Collected from Different Farms.
冻干山羊原奶样品的总脂肪含量采用格哈特公司自动酸水解系统 海卓森Hydrotherm+全自动快速索氏提取系统 索克森Soxtherm进行测定。总氮含量采用格哈特公司全自动消化系统 凯道森Kjeldatherm 消化样品,然后格哈特公司 全自动定氮仪VAPODEST 500 Carousel自动蒸馏和滴定。,对用12%(w/v)三氯乙酸沉淀后的牛奶滤液样品进行非蛋白氮分析。牛奶中的蛋白质含量计算为总N与非蛋白N的差值,将N的最终值转换为相应蛋白6.38倍。
Analysis of Feedstuffs Composition
Analysis of ether extract (crude fat), crude protein (CP), crude fibre (CF), and total ash was carried out according to the AOAC (2005) method and percentages of the nutrients were calculated following the formulas stated by Undersander et al. (1993) for forage analyses. Ether extract (EE) of feed samples was determined by petroleum ether extraction using a Soxtherm followed by evaporation to a constant weight. Total N content was determined using Kjeldatherm and Vapodest 50s instruments then, N values were converted to crude protein by multiplying by a factor of 6.25 (AOAC 2005; Undersander et al. 1993). Crude fibre of feed samples was analysed using a Fibertherm (Gerhardt, Germany) instrument programmed with two washing phases include 0.13 M sulphuric acid and 0.313 M sodium hydroxide solution (R&M Chemicals, United Kingdom).
工业园区污水及经生物反应器处理后的污水氨氮、有机氮及化学需氧量(COD)的测定
使用格哈特凯氏定氮仪测定药用汉麻(大麻)中氮含量
使用格哈特凯氏定氮仪测定水溶性复合氮磷肥料NPF中氮含量
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