Results 21 to 30 of about 606 (120)
核磁共振磷谱法测定乳制品中的磷脂含量Analysis of phospholipids content in dairy products by 31P NMR
Zhongguo youzhi, 2022 为了测定乳制品中的磷脂含量，建立了基于核磁共振磷谱（31P NMR）的磷脂分析方法，并采用内标法对磷脂进行了定量。利用建立的方法对不同哺乳期母乳（初乳、过渡乳、成熟乳）、奶粉（全脂奶粉、婴幼儿配方奶粉）、富含乳磷脂的乳清蛋白粉、大豆磷脂及鸡蛋磷脂中的磷脂组成及含量进行了分析。结果表明：9种磷脂标准品的检出限范围为48.97~85.76 μg/mL，定量限范围为97.94~171.52 μg/mL，具有合理的加标回收率（83.40%~108.52%）和精密度（相对标准偏差小于15 ...
林瑞雪，李峰，韦伟，金青哲，王兴国 LIN Ruixue，LI Feng，WEI Wei，JIN Qingzhe，WANG Xingguo
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Quality Safety Risk and Its Control of Barley and Barley Products(大麦及其制品质量安全风险及控制) [PDF]
Shipin kexue jishu xuebao, 2016 Barley is the largest cereal import in China. Nearly half a century, there has been a growing tendency of barley production and requirement, resulting in increasing activity of global trade of barley.
ZHANG Min(张敏) +2 more
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Zhongguo youzhi, 2022 为了估算拟卸液油到罐体积，使储油罐区有效配置罐容，避免加热液油卸入岸罐时发生溢冒事故，以进口精炼棕榈硬脂（熔点52.6 ℃）为例，研究了其在液态下温度变化和体积相对变化的关系，并基于体积温度系数对其在60～75 ℃范围内的体积进行了估算，同时实测液位和液温，求取体积和密度，计算液货质量，并采用常规密度推算法对精炼棕榈硬脂在60～75 ℃范围内的体积进行估算，对两种方法估算的体积进行t检验。结果表明：在60～75 ℃范围内，运用体积温度系数法求得的体积与常规密度推算法求得的体积没有显著差异。因此 ...
刘新1，俞晔1，2，夏拥军1，金俊2，金青哲2 LIU Xin1, YU Ye1,2, XIA Yongjun1, JIN Jun2, JIN Qingzhe2
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Study on Anti-Idiotype Antibodies Used for Monitoring Hazards in Edible Agricultural Products(抗独特型抗体在食用农产品危害物监控中的应用研究) [PDF]
Shipin kexue jishu xuebao, 2019 The hazards which affect the quality and safety in edible agricultural products are widely sourced and varied. The hazard risks of biological and chemical pollutants almost accompany the entire supply chains in edible agricultural products, from ...
XU Chongxin(徐重新) +10 more
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Zhongguo youzhi, 2023 可可脂类油脂富含对称型单不饱和甘油三酯，通过科学调控可可脂类油脂中的甘油二酯，可优化巧克力的调温工艺，控制其起霜行为。综述了可可脂类油脂中甘油二酯的含量与种类（包括脂肪酸饱和度、链长和位置分布），探讨其对油脂结晶行为的作用规律，进而分析其对巧克力抗霜性能的影响。在适宜含量下1,3-甘油二酯可促进油脂形成巧克力需要的Ⅴ型晶体结构，而1,2-甘油二酯则倾向于使油脂形成Ⅱ～Ⅳ型晶体结构，且作用程度受脂肪酸链长的影响。然而，高含量甘油二酯无法使油脂形成Ⅴ型晶体结构。当甘油二酯含量在3%～5%时 ...
陈昕玥，顾晓霞，王雨昕，刘周颖，朱云，金俊，金青哲，王兴国 CHEN Xinyue, GU Xiaoxia, WANG Yuxin, LIU Zhouying, ZHU Yun, JIN Jun, JIN Qingzhe, WANG Xingguo
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Quality Safety Issues and Research Progresses of Konjac(魔芋质量安全及研究进展) [PDF]
Shipin kexue jishu xuebao, 2017 Quality safety issues of konjac and its products mainly include:self-toxicity, sulfur dioxide residue, potential pollution, as well as the lack of related standards.
ZHOU Xing(周星) +1 more
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A Food Safety Risk Forecast Model Integrated With Improved AHP and XGBoost Algorithm:A Case Study of Rice(集成改进AHP与XGBoost算法的食品安全风险预测模型:以大米为例) [PDF]
Shipin kexue jishu xuebao, 2022 In recent years, China has made great improvements in food quality and safety control, but with the increase in the scale of the food industry, the demand for inspections has increased. Moreover, food safety inspection data has appeared high-dimensional,
WANG Xiaoyi(王小艺) +5 more
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Zhongguo youzhi, 2023 为提高大鲵下脚料的综合利用价值，以人工养殖大鲵肝脏为原料，采用酶解法提取大鲵肝油。先对蛋白酶进行了筛选，再采用单因素实验考察了pH、液固比、酶添加量、酶解时间、酶解温度对大鲵肝油提取率的影响，在此基础上利用响应面法优化大鲵肝油提取的工艺条件，并对精炼前后大鲵肝油的理化指标及脂肪酸组成进行了测定。结果表明：大鲵肝油提取的最优工艺条件为选用木瓜蛋白酶、pH 6.5、液固比2.5∶ 1、酶添加量2 100 U/g、酶解时间4 h、酶解温度65 ℃，在此条件下大鲵肝油提取率为79.92%；粗制大鲵肝油的酸值 ...
陈彦婕1，唐嘉诚1，宫萱1，黄可承1，单钱艺2，包建强1,3,4 CHEN Yanjie1, TANG Jiacheng1 , GONG Xuan1 , HUANG Kecheng1, SHAN Qianyi2 , BAO Jianqiang1,3,4
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Zhongguo youzhi为了科学指导坚果选购和膳食合理搭配，以福建地区5个获全国农产品地理标志的花生品种（“赖坊”“衙口小琉球”“朱口小籽”“文亨红衣”“洋后”）为研究对象，以七大类营养素、必需脂肪酸、必需氨基酸和部分功能性营养因子共50种营养素为评价指标，依次计算花生仁中营养素的多样度、匹配度和平衡度。在此基础上，计算综合评价指标偏离指数，获得5种花生仁营养价值的综合排序。结果表明：5种花生仁营养素的多样度一致，均含有46种营养素，但匹配度差异较大，“洋后”“赖坊”“朱口小籽”“衙口小琉球”“文亨红衣”的匹配度分别为0 ...
颜孙安1,2,3，黄敏敏1,2,3，刘文静1,2,3，林香信1,2,3，姚清华1,2,3 YAN Sun′an1,2,3, HUANG Minmin1,2,3, LIU Wenjing1,2,3, LIN Xiangxin1,2,3, YAO Qinghua1,2,3
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Quality and Safety Control of Whole Industry Chain of Tomato Products(番茄全产业链产品质量安全控制) [PDF]
Shipin kexue jishu xuebao, 2015 Tomatoes are known as fruits and vegetables. A growing number of tomato products have been developed in recent years and the innate value of tomato has been greatly increased after the deep processing. Therefore, the quality of tomato products has gained
MA Tingjun(马挺军)
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