Research on the green-maintaining process of wild Sonchus brachyotus DC. and the compound optimization of green and crisp maintaining agent

doi:10.14088/j.cnki.issn0439-8114.2019.18.025

Abstract

Abstract: To get the optimum green-maintaining process and green agent formula,the effect of alkali steeping and blanching conditions on chlorophyll retention rate of wild Sonchus brachyotus DC. were studies by the single factor randomized trial design. Meanwhile, take the chlorophyll retention rate, hardness as indicators, respectively. Based on the results of single factor test, orthogonal test was adopted to optimize the green-maintaining process. Innovative use of D-sodium erythorbate, sodium phytate, sodium bicarbonate, calcium chloride 4 kinds of food-grade additive without heavy metalions for the treatment of green and crisp maintaining agent compatibility optimize test. The results showed that the pre-treated wild Sonchus brachyotus DC. was soaked in an anhydrous sodium carbonate solution with a ratio of solid to liquid of 1∶15 and a concentration of 0.1 g/L for 30 min. Then after blanching for 60 seconds in the color protection solution at a temperature of 92 ℃, the obtained wild Sonchus brachyotus DC. had the best effect of protecting green and crisps. The best formula of the composite green and crisps maintaining agent is： D-sodium ascorbate 4.0 g/L, the concentration of sodium phytate is 0.1 g/L, the concentration of sodium bicarbonate is 4.0 g/L, the concentration of calcium chloride is 0.8 g/L. Under these conditions, the retention rate and hardness of chlorophyll were the highest, which were 88.29% and 3.62 N, respectively.

Key words: wild Sonchus brachyotus DC., green and crisps maintaining, chlorophyll retention rate, hardness

CLC Number:

TS255

ZHAN Zong-bing, KANG San-jiang, ZHANG Hai-yan, GOU Li-na. Research on the green-maintaining process of wild Sonchus brachyotus DC. and the compound optimization of green and crisp maintaining agent[J]. HUBEI AGRICULTURAL SCIENCES, 2019, 58(18): 102-107.

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