灿稻稻谷后熟及稻米中内源性脂质脱除对粘米理化特性的影响
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中图分类号：TS213 文献标识码：A 文章编号：1000-4440（2025）11-2119-08
Abstract：To clarifytherelationshipbetween thepost-harvest ripening and endogenous lipids withthephysicochemicalpropertiesofindicarice，thenewlyharvestedindicarice Zhongzao35wasusedastheexperimentalmaterial inthis study.Afteracceleratedstorage treatment，thisstudyanalyzedthechangesinnonstarchlipidcontent，starch lipidcontent andfatyacidcompositionof indicariceafterpost-harvestripening，aswellasalterations inthephysicochemicalproperties suchasapparentamylosecontent，hydrationproperties，pasting propertiesandgel texturepropertiesof themilldrice followinglipidremoval.Theresultsshowedthattheinitialcontents ofnon-starchlipidsandstarch lipids inthenewlyharvestedindicaricewere 0.37% and 0.58% ，respectively.The non-starch lipidswere significantlydegraded inricemilled after3O days of post-harvest ripening，and the starch lipids weresignificantly degradedinricemilled after6O daysof post-harvestripening.Furthermore，in rice milled after90daysof post-harvest ripening，therelativecontentsofoleicacidandlinoleicacid innon-starch lipids increased markedly， while therelativecontentsofoleicacidandlinoleicacidinstarchlipidsdidnotchange significantly.There wasnosignificant dierence intheapparentamylosecontentbetweenthenon-starchlipids-removedindicariceandtheon-defattd indica rice，whilethe apparent amylosecontentof the non-starch lipidsandstarch lipids-removed indica rice was significantly higherthanthatofthe non-defatedandthenon-starchlipids-removedindicarice.Theremovalofnon-starchlipidscouldincreasethesolubilityandswelingpowerofindicarice，andhadlitleefectonotherindicators.Theremovalofnonstarch lipidsand starch lipidscouldnotonlyincreasethesolubilityandswelingpowerof indicarice，butalsoincreasethedisintegrationvalue，retrogradation value，hardness，gumminess andchewinessof indicarice，andreduce thepasting temperature.
Key words：indica rice；post-harvest ripening of rice grains；non-starch lipids；starch lipids；physicochemical properties
灿稻稻谷在收获后通常需要经历一定的后熟期，才能稳定其食用品质和加工品质[1]。（剩余11785字）
