Medlar mould proof color fixative

Abstract

The invention relates to a medlar mould proof color fixative which comprises components by weight percentage: 0.08-0.12% of ethyl p-hydroxybenzaote sodium, 0.16-0.24% of propylparaben sodium, 1.00-2.00% of iso-ascorbyl sodium, 0.50-0.75% of EDTA-2Na, 1.00-1.50% of sodium pyrophosphate and the balance of water; the medlar mould proof color fixative adopts the sodium salt of hydroxybenzoic acid ester mildewproof agent, has low toxicity, non-sulphur residual, good water-solubility and high efficient inhibiting effect on the mould which cause medlar to mildew; the iso-ascorbyl sodium, the EDTA-2Na and the sodium pyrophosphate which have very good color-preserving effect on the medlar pigment has better color-preserving effect; and the selected mildewproof agent and the color fixative can be well combined and has no influence on the effect with each other after being combined.

Description

technical field [0001] The invention relates to the technical field of fruit and vegetable preservation. Background technique [0002] At present, there is no compound food additive specially used for anti-mold and color protection of wolfberry. The unqualified rate of wolfberry after drying is about 20%. In order to reduce losses, farmers fumigate moldy wolfberry with sulfur, and the wolfberry fumigated by sulfur, SO 2 The residual amount exceeds 1000mg / kg, which is more than 20 times the allowable residue amount ≤ 50mg / kg clearly stipulated in the national standard GB / T 18672-2002 Lycium barbarum (lycium barbarum), becoming a "poisonous wolfberry" with "red skin and black heart". [0003] Mature goji berries have high water content, soft flesh that is easy to squeeze, and high sugar content, making goji berries easily infected by microorganisms and moldy during drying and storage. The composition of wolfberry pigment is fatty carotene compound, which makes wolfberry appea...

AI Technical Summary

Problems solved by technology

[0005] Chinese patent 200610163494 (application number) discloses a kind of wolfberry color-protecting dewaxing agent, and this color-protecting dewaxing agent is made up of sodium bicarbonate, potassium sorbate, sodium citrate, sodium benzoate, sodium nitrite, and main component in this patent It is sodium bicarbonate, and its main function is to dewax. The antifungal agent used is potassium sorbate. According to our laboratory research, potassium sorbate has no significant anti-mildew effect on the main bacteria that cause wolfberry mildew, and the concentration If it is too high, the residual amount will easily exceed the standard, and the cost is high, so it is not easy to promote

[0006] Chinese patent 200810133860 (application number) discloses a special color-protecting dry agent for wolfberry. The raw materials are edible soda ash, sodium citrate, sodium isoVC and potassium sorbate. The best combination of color protection ratio

Images