【摘要】 对四棱豆荚果发育过程中可溶性糖、淀粉、脂肪、蛋白质、维生素C和粗纤维含量的变化规律进行研究,以便为四棱豆嫩荚的适时采收提供参考依据.研究结果表明,在荚果发育过程中不同营养成分峰值出现的时期不一,蛋白质和维生素C含量在荚果发育前期(花后20d以内)较高,可溶性糖和淀粉含量在荚果发育中期(花后25d左右)较高,脂肪和粗纤维含量在荚果发育后期(花后40d左右)较高,其中花后14~16d可食用嫩荚的粗纤维平均含量(干样品中)约为16.27%,但在花后18~25d粗纤维含量急剧增加,荚果迅速高纤维化,此时不宜食用.因此,四棱豆嫩荚在花后14~16d采收,食用口感好,营养价值较高.更多还原

【Abstract】 Content changes of soluble sugar,starch,fat,protein,vitamins C and crude fiber of the winged bean pod at different time were studied in this paper,in order to offer references for the timely harvest of the pods.The results showed that the periods of peak of different nutrients during the development were different,that the contents of protein and VC were the highest during the primary stage of development(less than 20 days after flowering),soluble sugar and starch were the highest at the middle stage(about 25 days after flowering),and that fat and crude fiber were the highest at the late stage(about 40 days after flowering).Crude fiber content of the pod from 14 to 16days after flowering was 16.27%,but the content of the pod from 18 to 25days after flowering rapidly increased,and the pod was highly fibrotic during the development when the pod was quite inedible.This study suggested that the optimal pod-picking period of tender pod was 14~16days after flowering when it was delicious and nutritious.更多还原