蔓薯并长期遮荫对商薯19淀粉加工品质及营养品质的影响  

Effects of Shading on Starch Processing Quality and Nutritional Quality of Sweet Potato Shangshu 19 at Vine-Root Tuber Simultaneous Growth Stage

作　　者：冉腾飞 夏茹 李永鹏 高娅 杨才 黄安柱 田山君[1] Ran Tengfei;Xia Ru;Li Yongpeng;Gao Ya;Yang Cai;Huang Anzhu;Tian Shanjun(College of Agriculture,Guizhou University,Guiyang 550025,China)

机构地区：[1]贵州大学农学院,贵州贵阳550025

出　　处：《山东农业科学》2024年第11期44-51,共8页Shandong Agricultural Sciences

基　　金：贵州省科技攻关计划项目“红薯粉条功能品质挖掘及加工副产物增值利用”(黔科合支撑〔2022〕重点013号);贵州省科技攻关计划项目“贵州主要野生蔬菜资源收集评价及标准化栽培技术集成与示范”(黔科合支撑〔2022〕重点019-05号)。

摘　　要：本试验以商薯19为材料,设置蔓薯并长期30%遮光度遮荫40 d后复光(复光)、蔓薯并长期-收获期持续30%遮光度遮荫(全遮)、全生育期不遮荫(CK)3种处理,研究不同处理对甘薯块根干物质量和总淀粉、可溶性蛋白、可溶性糖、还原糖、花青素含量以及淀粉组成、膨胀势、溶解度、老化特性的影响。结果表明,与CK相比,全遮处理降低商薯19块根干物质量和总淀粉含量,增加块根支链淀粉和可溶性蛋白含量及淀粉膨胀势和溶解度,且可溶性蛋白含量随遮荫时间延长而增加;全遮处理还降低块根淀粉老化值及还原糖、可溶性糖和花青素含量。而短期遮荫后复光有利于商薯19块根还原糖和可溶性糖含量增加。该结论可为寡光照地区的甘薯栽培提供数据支持。In this experiment,with Shangshu 19 as test material,three treatments including restoring af-ter shading for 40 days with 70%light transmittance at vine-root tuber simultaneous growth stage(restoring treatment),continuous shading with 70%light transmittance from vine-root tuber simultaneous growth stage to harvest time(shading treatment)and no shading during the whole growth period(CK)were set to study their effects on the dry matter mass,the contents of total starch,soluble protein,soluble sugar,reducing sugar and anthocyanin,and the starch composition,swelling potential,solubility and aging value.The results showed that compared to CK,shading treatment reduced the dry matter mass and total starch content of Shangshu 19 root tubers,and increased the contents of amylopectin and soluble protein,and the starch swelling potential and solubility;the soluble protein content increased with the prolongation of shading time.Shading treatment also decreased the starch aging value and contents of reducing sugars,soluble sugars and anthocyanins of root tu-bers.Short-term shading was favorable for the increase of soluble sugar content of Shangshu 19 root tubers.These results could provide data support for sweet potato cultivation in low-light area.

关 键 词：商薯19 遮荫 淀粉 加工品质 营养品质 

分 类 号：S531.01[农业科学—作物学]