Edible composite coating preservative for annona squamosa and preparation method of preservative

Abstract

Provided are edible composite coating preservative for annona squamosa and a preparation method of the preservative. The preservative comprises a Chinese herbal medicine extracting solution and polysaccharide coating liquid which are used in two times; the Chinese herbal medicine extracting solution is prepared from, by mass, 2.5%-4% of coptidis rhizoma extracting solution, 1.5%-3% of folium artemisiae argyi extracting solution and the balance distilled water; the polysaccharide coating liquid is prepared from, by mass, 0.55%-0.85% of complex gum, 1%-2% of glycerin, 0.2%-0.45% of fruit green solution and the balance distilled water. The preservative can form a membrane on the surface of the annona squamosa, consumption of nutritional components such as organic acid and VC in fruits of the annona squamosa can be inhibited, the browning rate, the fruit cracking rate and the soluble solid conversion speed are decreased, ripening and softening process is delayed, the respiratory rate is inhibited, accumulation of malonaldehyde is reduced, the degree of cell membrane lipidic peroxidation is reduced, fruit senescence is delayed, and the good fresh-keeping effect is achieved.

Description

【Technical field】 [0001] The invention relates to an edible composite coating-film preservative for custard apples, in particular to an edible composite coating-film preservative for custard apples and a preparation method thereof. 【Background technique】 [0002] Annonasquamosa (scientific name: Annonasquamosa), is a perennial semi-deciduous small tree plant in the family Annonasquamosa. Annonasquamosa is a tropical fruit with a spherical surface covered with knots. The size of the fruit is similar to that of pomegranate. The fruit is sweet and the flesh is milky white. , the flesh is snow-white and has a dense taste, sweet and slightly sour, fresh and sweet, and has a very good flavor. The custard apple has the effect of lowering blood sugar and is the best antioxidant fruit, which can effectively delay skin aging and whiten the skin; the high fiber content of custard apple can effectively promote intestinal peristalsis and remove the stool accumulated in the intestines, so...

AI Technical Summary

Problems solved by technology

However, the fruit of custard apple is easy to soften, crack and brown after harvesting, and it is not resistant to low temperature refrigeration. Generally, the fruit will gradually soften, crack and then rot and deteriorate within 1-3 days after picking in the ripe season.