对国标法测定单硬脂酸甘油酯含量的探讨

探讨了国标GB15612-1995测定硬脂酸单甘酯含量的误差、影响因素,提出了修改国标含量检测的一些建议。      

对国标法测定山梨糖醇液的探讨

探讨了国标ＧＢ７６５８－ ８７ 的适用范围、测定山梨醇含量的误差及Ｆｅ２＋ 对测定Ｎｉ２＋的干扰,提出了修改国标的一些建议     

影响化学测定法测定单硬脂酸甘油酯含量准确性的关键因素

本文阐述了用化学方法测定单硬脂酸甘油酯含量时的最关键条件,这个因素的变化可直接影响检测结果。     

影响化学测定法测定单硬脂酸甘油酯含量准确性的关键因素

本文阐述了用化学方法测定单硬脂酸甘油酯含量时的最关键条件，这个因素的变化可直接影响检测结果。     

单硬脂酸甘油酯对棕榈硬脂固体脂肪含量及硬度的影响

食品工业中通常利用乳化剂调控塑型脂肪的物理性质及加工性能,其中,单硬脂酸甘油酯(GMS)是应用较为广泛的乳化剂。通过考察质量分数1%,2%,4%的GMS对棕榈硬脂在不同温度下的固体脂肪含量(SFC)、硬度及微观结构的影响,发现:棕榈硬脂及其与质量分数1%,2%,4%的GMS混合物的SFC和硬度随着温度的升高而降低。GMS的添加量对棕榈硬脂SFC的影响在较高温度(21.1~33.3℃)下更显著,当GMS添加量高于1%时,棕榈硬脂的SFC随GMS质量分数的增加而增加。而在15~30℃时,4%GMS的棕榈硬脂的硬度显著高于其它质量分数,且结晶颗粒细小,结晶网络结构致密。结果表明,在温度高于30℃时,添加GMS可以增加棕榈硬脂的SFC及硬度,且减小其结晶颗粒粒度,赋予更为致密的结构,这对棕榈硬脂基塑性脂肪在温度较高季节的储运及品质改善提供了理论依据。     

面包保鲜剂中单硬脂酸甘油酯的含量测定方法的探讨

<正>目前食品工业不断发展,面包的质量有了很大的提高,质软疏松,保鲜期长,其中面包保鲜剂--单硬脂酸甘油酯(以下简称单甘酯)的应用尤为广泛,我国食品添加剂     

单硬脂酸甘油酯在面制食品中的应用

作为一种安全、高效的乳化剂,单硬脂酸甘油酯在食品工业中应用广泛,尤其在面制食品的生产、加工中。它可以赋予面制食品良好的外观和口感,是常用的面制食品品质改良剂。本文概述了单硬脂酸甘油酯的性质、分类,综合分析其对面粉稳定性的影响。此外,本文以面包、蛋糕、面条等为例,对单硬脂酸甘油酯在面制食品中应用进展进行归纳总结,以期为面食制品质量的进一步改善提供理论参考。     

对国标法测定食用酒精中氰化物含量的改进

本文基于酒精通用实验方法（ＧＢ／Ｔ３９４．１－９４）中采用异烟酸－吡唑啉酮法测定食用酒精氰化物的含量时，乙醇含量（或酒度）的多少会严重影响测定结果的准确性，其方法回收率为１３２％￣１７２％，为此，本文进行了改进，提出了在一定的酒度条件下，进行测定的方法，结果令人满意，方法回收率为９５．８％￣１０６％。     

单硬脂酸甘油酯生产新工艺

从降低生物柴油的成本和综合利用副产物甘油的角度出发,利用其副产物75%粗甘油替代纯甘油合成单硬脂酸甘油酯;用乙醇替代苯萃取重结晶;以中心组合设计试验得出最佳的条件。研究表明,最佳工艺条件为:物料比2.8,反应时间1.8h,反应温度240℃。得到的含量为97.97%的高纯度单硬脂酸甘油酯,可作为食品添加剂。     

油墨术语 GB／T 15962-1995

本标准规定了油墨和有关产品、检验方法、应用及其原材料等的技术术语。本标准适用于油墨的生产、应用、科研、教学、出版及编制标准等．也可供国内外技术交往中使用。     

对GB／T8918－1995《钢丝绳》标准的理解

ＧＢ／Ｔ８９１８－１９９５（钢丝绳》标准较以往的钢丝绳标准水平更高，更能适应生产需要。本文对新标准的部分条款作了叙述，突出难点，阐述深入，有助于对新标准的统一认识和理解。     

对GB／T8918－1995《钢丝绳》标准的理解

ＧＢ／Ｔ８９１８－１９９５（钢丝绳》标准较以往的钢丝绳标准水平更高，更能适应生产需要。本文对新标准的部分条款作了叙述，突出难点，阐述深入，有助于对新标准的统一认识和理解。     

油墨术语Glossary of priting ink terms GB/T 15962-1995

1主题内容与适用范围 本标准规定了油墨和有关产品、检验方法、应用及其原材料等的技术术语. 本标准适用于油墨的生产、应用、科研、教学、出版及编制标准等,也可供国内外技术交往中使用.     

An investigation into the manufacture of cream-based liqueurs

The final year of the Food and Dairy Technology course at the Cheshire College of Agriculture, Reaseheath. requires a project to follow logically from a literature survey, with the undertaking of practical research leading to a final report and a formal seminar presentation. The choice of our topic followed an interest in work undertaken by the Hannah Research Institute on cream liqueurs. Independently the College was contacted by the Hereford Cider Museum Trust, who were interested in manufacturing a cream liqueur from a Calvados distillate. Consequently this became a prime objective of the project. For the academic year 1 982-3 this project was awarded the Society of Dairy Technology cup, and the following is a brief summary of the final report.     

An enzymatic-colorimetric assay for the quantification of Bifidobacterium

An enzymatic-colorimetric assay for the quantification of Bifidobacterium was developed. The method, based upon the standard detection of fructose-6-phosphate phosphoketolase activity, was optimized with respect to bacterial cell pretreatment, time of incubation, and substrate concentration. The relationship between bacterial biomass and phosphoketolase activity was linear in a wide spectrum of bacterial densities. Higher sensitivity over the standard method was achieved by using 0.25% Triton X-100 in the reaction mixture to pretreat the bacterial cells. Because autoaggregation is a frequent feature among Bifidobacterium strains, this simple and reproducible method offers good advantage over viable plate count and turbidimetric techniques. The methodology can also be applied to the assessment of adherent Bifidobacterium strains to human epithelial cells.     

轻型印刷纸表面施胶工艺探讨

为了解决轻型印刷纸的防水性差和易掉毛掉粉问题,根据该纸质的特性,采用具有表面增强和抗水性较好的CT-51L有机硅型表面施胶剂,取得了较好的施胶效果。本文介绍了CT-51L施胶剂的特性、反应机理及生产应用情况,并进行了经济效益分析。     

Effect of water and monoglyceride concentration on the behaviour of monoglyceride containing fat systems

The effect of water and monoglycerides on the structural behaviour of a selected fat system was investigated to explore their role in structure development of products like margarine and sponge cake. Firstly, the monoglyceride and triglyceride system was selected based on solid fat content (SFC) determination. This system was further investigated by differential scanning calorimetry (DSC) and polarized light microscopy (PLM). Secondly, the role of water concentration in this system was investigated by SFC-determination and hardness measurements at different water concentrations. These investigations demonstrate clearly the important role of water, especially at lower concentrations. Finally, the influence of monoglycerides on droplet size distribution in margarines and on textural properties of sponge cakes was investigated. These investigations reveal a larger droplet size of monoglyceride containing margarines and a more dense and harder texture of sponge cakes containing monoglycerides.