An X-ray diffraction analysis of crystallised whey and whey-permeate powders

Justin Nijdam; Alexander Ibach; Klaus Eichhorn

首页> 外文期刊>Carbohydrate research >An X-ray diffraction analysis of crystallised whey and whey-permeate powders

【24h】

An X-ray diffraction analysis of crystallised whey and whey-permeate powders

机译：结晶乳清粉和乳清粉的X射线衍射分析

获取原文

获取原文并翻译 | 示例

掌桥外文数据库（机构版） >>

开具论文收录证明 >>

文献代查 >>

页面导航

摘要
著录项
相似文献
相关主题

摘要

Amorphous whey,whey-permeate and lactose powders have been crystallised at various air temperatures and humidities,and these crystallised powders have been examined using X-ray diffraction.The most stable lactose crystal under normal storage conditions,alpha-lactose monohydrate,forms preferentially in whey and whey-permeate powders at 50 °C,provided sufficient moisture is available,whereas anhydrous beta-lactose and mixed anhydrous lactose crystals,which are unstable under normal storage conditions,form preferentially at 90 °C.Thus,faster crystallisation at higher temperatures is offset by the formation of lactose-crystal forms that are less stable under normal storage conditions.Very little a-lactose monohydrate crystallises in the pure lactose powders over the range of temperatures and humidities tested,because the crystallisation of alpha- and beta-lactose is considerably more rapid than the mutarotation of beta- to alpha-lactose in the amorphous phase and the hydration of alpha-lactose during crystallisation.Protein and salts hinder the crystallisation process,which provides more time for mutarotation and crystal hydration in the whey and whey-permeate powders.

机译：非晶态乳清粉，乳清蛋白粉和乳糖粉在各种温度和湿度下均已结晶，并使用X射线衍射对其进行了研究。在正常储存条件下，最稳定的乳糖晶体，α-乳糖一水合物优先形成于乳清粉和乳清蛋白粉在50°C时可提供足够的水分，而无水β-乳糖和混合的无水乳糖晶体在正常存储条件下不稳定，优先在90°C时形成。因此，在较高温度下结晶更快通过在正常储存条件下不稳定的乳糖结晶形式的形成来抵消。在测试的温度和湿度范围内，纯乳糖粉中很少有α-乳糖一水合物结晶，因为α-和β-乳糖的结晶比无定形相中的β-乳糖突变和α-lac的水合作用快得多蛋白质和盐会阻碍结晶过程，从而为乳清和乳清透粉中的突变和晶体水合作用提供更多时间。

著录项

来源
《Carbohydrate research》 |2007年第16期|共11页
作者
Justin Nijdam; Alexander Ibach; Klaus Eichhorn;
展开▼
作者单位

展开▼
收录信息
原文格式 PDF
正文语种 eng
中图分类 Q629;
关键词
Whey; Lactose; Crystallisation; Amorphous; Caking;

机译：乳清;乳糖;结晶;无定形;结块;

相似文献

外文文献
中文文献
专利

1. An X-ray diffraction analysis of crystallised whey and whey-permeate powders [J] . Justin Nijdam, Alexander Ibach, Klaus Eichhorn Carbohydrate research . 2007,第16期

机译：结晶乳清粉和乳清粉的X射线衍射分析
2. Crystallization kinetics of amorphous lactose, whey-permeate and whey powders [J] . Alexander Ibach, Matthias Kind Carbohydrate research . 2007,第10期

机译：非晶态乳糖，乳清蛋白和乳清粉的结晶动力学
3. Determination of the kinetics of crystallisation of gibbsite using time resolved in situ energy dispersive powder X-ray diffraction [J] . Fogg AM., Francis RJ., OBrien S., Journal of Materials Chemistry: An Interdisciplinary Journal dealing with Synthesis, Structures, Properties and Applications of Materials, Particulary Those Associated with Advanced Technology . 2000,第10期

机译：用时间分辨原位能量分散粉末X射线衍射测定三水铝石的结晶动力学
4. A New Furnace For High-Temperature Synchrotron X-ray Powder Diffraction Experiments — Electron Density Analysis By Powder X-ray Diffraction At 1300°C [C] . Masahiko Tanaka, Masatomo Yashima, Takeharu Mori International Conference on Synchrotron Radiation Instrumentation . 2004

机译：一种新的高温同步X射线粉末衍射实验 - 通过粉末X射线衍射在1300℃下进行电子密度分析
5. Beyond FIT2D: Calculating Intensity Errors for Data Analysis of X-Ray Synchrotron Powder Diffraction Data. [D] . Sims, Melissa. 2014

机译：超越FIT2D：计算X射线同步加速器粉末衍射数据数据分析的强度误差。
6. Quantitative Determination of Hydrate Content of Theophylline Powder by Chemometric X-ray Powder Diffraction Analysis [O] . Makoto Otsuka, Hajime Kinoshita 2010

机译：化学计量X射线粉末衍射法定量测定茶碱粉中的水合物含量
7. Small-Angle X-Ray Scattering (SAXS), Ultra-Small Angle X-Ray Scattering (USAXS), Fluctuation X-Ray Scattering (FXS), Wide-Angle X-Ray Scattering (WAXS), Grazing-Incidence Small-Angle X-Ray Scattering (GISAXS), Grazing-Incidence Wide-Angle X-Ray Scattering (GIWAXS), Small-Angle Neutron Scattering (SANS), Grazing-Incidence Small-Angle Neutron Scattering (GISANS), X-Ray Diffraction (XRD), Powder X-Ray Diffraction (PXRD), Wide-Angle X-Ray Diffraction (WAXD), Grazing- Incidence X-Ray Diffraction (GIXD) and Energy-Dispersive X-Ray Diffraction (EDXRD) Comparative Study on Malignant and Benign Human Cancer Cells and Tissues under Synchrotron Radiation [O] . Alireza Heidari 2017

机译：小角X射线散射（萨克斯），超小角X射线散射（USAX），波动X射线散射（FXS），广角X射线散射（蜡），放牧发生小角度x - 射线散射（吉即），放牧入射广角X射线散射（Giwaxs），小角度中子散射（SAN），放牧发生小角度中子散射（Gisans），X射线衍射（XRD），粉末X射线衍射（PXRD），广角X射线衍射（WAXD），放牧发病X射线衍射（GIXD）和能量分散X射线衍射（EDXRD）对恶性和良性人体癌细胞的比较研究和同步辐射下的组织
8. FIRESTAR A set of four programs for the evaluation of X-ray powder diffraction measurements and the derivation of crystal lattice parameters and FIRECRACKER a program for the calibration of X-ray powder diffractometers [R] . G. ASTLE, I. F. FERGUSON 1970

机译：FIREsTaR一套用于评估X射线粉末衍射测量和晶格参数推导的四个程序和一个用于校准X射线粉末衍射仪的程序FIRECRaCKER

An X-ray diffraction analysis of crystallised whey and whey-permeate powders

摘要

著录项

相似文献

相关主题

期刊订阅