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时间:2018-09-18
《山体库贮藏马铃薯淀粉、还原糖含量及淀粉酶活性的变化》由会员上传分享,免费在线阅读,更多相关内容在学术论文-天天文库。
1、中国屉爹通报2011,27(12):106—111ChineseAgriculturalScienceBulletin山体库贮藏马铃薯淀粉、还原糖含量及淀粉酶活性的变化张勇,高海宁,王恩军,王兴德,李红,李彩霞(河西学院农业与生物技术学院,甘肃张掖734000;民乐县科学技术局,甘肃民乐734500)摘要:为探讨甘肃省民乐县山体库贮藏对马铃薯品质的影响。对9个马铃薯品种不同贮藏时期淀粉、还原糖含量以及淀粉酶活性进行分析测定。结果表明:随着贮藏期的延长,大多数品种的淀粉含量表现为升一降一升降,还原糖含量表现为升一降,淀粉酶活性表现为升一降升降;2月份是一个临界贮藏时期,淀粉含量降
2、低到最低(12.68%~22.47%),还原糖含量达到最高点(0.43%~2.41%),淀粉酶活性降低到最低点(0.43~0.87mg/(g·min))。山体库有利于马铃薯的贮藏;‘青薯6号’和‘同薯23号’适合做菜用型品种,‘大西洋’、‘夏波蒂’和‘LK一99’适合做生产加工型品种,为了保证品质,最佳的加工时间在次年2月之前完成;淀粉酶活性和淀粉含量之间存在负相关,与还原糖之间存在正相关,淀粉含量和还原糖含量之间存在负相关,淀粉含量和还原糖含量之间处于动态平衡状态。关键词:马铃薯;山体库;淀粉含量;还原糖含量;淀粉酶活性中图分类号:$379.9文献标志码:A论文编号:2010
3、.3652ChangeofStarch,ReducingSugarandAmylaseActivityofPotatoduringStorageintheCavesWarehouseZhangYong,GaoHainin,WangEnjun,WangXingde,LiHong,LiCaixia(CollegeofAgricuhureandBiotechnology,HexiUniversity,ZhangyeGansu734000;~ScienceandTechnologyBureauofMinleCounty,MinleGansu734500)Abstract:Inorder
4、toexplorethecaveswarehousestorageeffectofqualityofpotatoinMinleCounty,GansuProvince.WecollectedninecuhivarsofpotatoesfromtheMinleCounty,GansuProvincetoevaluatethestarch,reducingsugarcontentandamylaseactivitywhichstoredatdifferentstorageperiods.Theresultsindicatethatwiththestorageperioddevelo
5、ped,thestarchcontentofthemostpotatoeswereshowedincrease—decrease—increase—decrease,reducingsugarcontentswereshowedincrease-decrease,andamylaseactivitywereshowedincrease-decrease-increase-decrease.DuringJanuarytoFebruary,thelowesttemperatureinayear,thestarchcontentandamylaseactivityreachedthe
6、irminimumlevel(12.68%-22.47%)and(O.43—0.87mg/(g。min),respectively,butthereducingsugarachievedtheirmaximumlevel(0.43%一2.4l%).Thecaveswarehousewasofbenefittostorageofpotato.Pearsoncorrelationmatrixanalysisshowedthat,reducingsugarcontentandamylaseactivitynegativelycorrelatedwithstarch,butamylas
7、eactivitypositivelycorrelatedwithreducingsugarcontent.Betweenthereducingsugarandstarchcontenthadadynamicbalance.Fromthereducingsugarandstarchtoanalyzethesetwoindexes.‘Qinshu6’and‘Tongshu23’weresuitableforcookingusing,thethreevarietiesof‘Atlantic’,‘
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