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요약정보
差示扫描量热法测定谷氨酸纯度 / Purity determination of glutamic acid by DSC
Resource Type
Academic Journal
Authors
马英楠
;
李玉朴
;
刘蓓蕾
;
马育松
;
姚春毅
;
候兰静
;
MA Ying-nan
;
LI Yu-pu
;
LIU Bei-lei
;
MA Yu-song
;
YAO Chun-yi
;
HOU Lan-jing
Source
食品与机械 / Food & Machinery
. 39(4):51-102
Subject
差示扫描量热法
谷氨酸
纯度
Language
Chinese
ISSN
1003-5788
Online Access
Find it @ DONGA
초록
目的:研究差示扫描量热法(DSC)测定谷氨酸纯度的可行性.方法:以铟和锌校正仪器,考察样品粒径、试验气氛、升温速率和样品质量等因素对DSC测定结果的影响,并在最佳条件下测定谷氨酸纯度;比较DSC法和中国药典2015版滴定法的测定结果.结果:当称样量为3 mg,升温速率为40℃/min时,DSC测得谷氨酸纯度为99.74%,精密度为0.07%.滴定法测得谷氨酸纯度为99.72%.结论:DSC法准确度高、操作简便,可用于谷氨酸的纯度测定.
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