EXTRACTION OF LIPIDS FROM CEREAL STARCHES WITH HOT AQUEOUS ALCOHOLS
EXTRACTION OF LIPIDS FROM CEREAL STARCHES WITH HOT AQUEOUS ALCOHOLS
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DOI：
10.1002/star.19850370304
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发表时间：
1985-01-01
期刊：
影响因子：
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通讯作者：
COVENTRY, AM
中科院分区：
文献类型：
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作者：
MORRISON, WR;COVENTRY, AM
谷物淀粉在100度下提取。C用不同比例的低醇和水建立最佳条件。在100度下提取玉米淀粉2小时，脂质得率通常超过90%。C，当每克淀粉使用不少于14毫升75-85%的甲醇、10毫升75%的乙醇、12毫升74-78%的正丙醇、14毫升74-78%的异丙醇或17毫升84%的正丁醇时。小麦a -淀粉（>.8 .亩）也得到了类似的结果。小麦b型淀粉（< 0.8 μ m）；M粒径)与大米淀粉用正丙醇-水，与大米淀粉用甲醇-水。如果酒精和水的比例不保持在明确的限度内，特别是丁醇和乙醇，产量就会下降。完全回收脂质的首选条件是两次2小时提取和一次1小时提取，温度为100度。C，每克淀粉含有不少于16毫升75%的正丙醇。
Cereal starches were extracted at 100.degree. C with various proportions of lower alcohols and water to establish optimum conditions. Lipid yields generally exceeding 90% were obtained with one 2 h extraction of maize starch at 100.degree. C when using not less that 14 ml of 75-85% methanol, 10 ml of 75% ethanol, 12 ml of 74-78% n-propanol, 14 ml of 74-78% isopropanol, or 17 ml of 84% n-butanol per g starch. Similar results were obtained with wheat A-starch (> 8 .mu.m granule diameter), wheat B-starch (< 8 .mu.m granule diameter) and rice starch using n-propanol-water, and with rice starch using methanol-water. Yields decreased if the proportions of alcohol and water were not kept within well-defined limits, especially with butanol and ethanol. The preferred conditions for complete recovery of lipids were two 2-h extractions and one 1-h extraction at 100.degree. C with not less than 16 ml of 75% n-propanol per g starch.