Evaluation of the nutritional and food sensory qualities of different vegetable shoots based on the fuzzy mathematical affiliation function method
In order to further explore the nutritional and edible quality characteristics of vegetable rapeseed sprouts(Brassica napus L.)(abbreviation:rapeseed sprouts),the purple rapeseed shoots(Brassica campestris var.purpuraria,also known as red rapeseed shoots)and cabbage hearts(Brassica campestris L.ssp.chinensis var.utilis Tsen et Lee,also known as white rapeseed shoots),which were common vegetables used in the market for shoots,were used as comparative objects to analyze the edible sensory and nutritional indexes(total phenols,flavonoids,vitamins,mineral elements,etc.)of three types of vegetable shoots(a total of 15 different variet-ies),and the fuzzy mathematical subordinate function method was used to screen out vegetable rapeseed varieties with high compre-hensive quality.The results showed that there were large differences in quality among the three types of vegetable shoots,and as far as nutritional quality was concerned,the average total phenol,soluble protein,vitamin C,vitamin B2,K,and Se contents of rapeseed sprouts were higher than those of red rapessed shoots and white rapeseed shoots.Rapeseed sprouts with the high K element content also had a low Na/K ratio,and belonged to the low-sodium and high-potassium food.Their Se content was much higher than the national minimum standard for selenium-rich vegetables,1.6 times as much as red rapeseed shoots,3.4 times as much as white rapeseed shoots,and the content of heavy metal elements,such as Cd and Pb,was lower than China's green food green leafy vegetable stan-dard NY/T 743-2020.As far as sensory quality was concerned,rapeseed sprouts had the highest average sensory score(86.04 points),which was superior to red rapeseed shoots and white rapeseed shoots.Based on the fuzzy mathematical affiliation function method,the overall ranking of the comprehensive score of rapeseed sprouts was relatively high,among which selenium Ziyuan No.2,21YC-76,and Shishan 2017 rapeseed sprouts had a higher comprehensive ranking,and were suitable for promotion as overwintering shoots vegetable varieties.
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