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酱油无盐固形物的检验

2016-04-30 04:55:33| 分类：食品检验 | 标签： |举报 |字号大中小订阅

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酱油无盐固形物的检验

1、将样品充分振摇后，用干滤纸滤入干燥的 250 mL锥形瓶中备用。

2、 2、吸取上述试液10. 00 mL于100 mL容量瓶中，加水稀释至刻度，摇匀。

3、吸取上述稀释液 5. 00 mL置于已烘至恒重的称量瓶中，移入（103士2)℃电热恒温干燥箱中，将瓶盖斜置于瓶边。4h后，将瓶盖盖好，取出，移入干燥箱内，冷却至室温（约需 0.5 h),称量。再烘0. 5 h，冷却，称量，直至两次称量差不超过1 mg，即为恒重。

4、计算

X=（M2—M1）÷（10÷100÷5）×100

式中：X,— 样品中可溶性总固形物的含量，g/100 mL;

M2— 恒重后可溶性总固形物和称量瓶的质量，g;

Ml— 称量瓶的质量，g

5、所用器材、药品

250三角瓶

10毫升、5毫升移液管

100毫升容量瓶

称量瓶

干燥箱（烘箱）

干燥器（干燥冷却器）

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