A kind of large yellow croaker composite film-forming preservative and preparation method thereof

Abstract

The invention discloses a composite film forming preservative for large yellow croakers. The composite film forming preservative consists of the following components in percentage by mass: 0.5 to 1 percent of sodium citrate, 0.3 to 0.5 percent of sodium erythorbate, 1 to 3 percent of vitamin C, 1 to 3 percent of erythritol, 0.1 to 0.3 percent of apple branch polypehnol, 0.1 to 0.3 percent of glucolactone, 3 to 5 percent of EDTA (ethylene diamine tetraacetic acid) disodium, 0.2 to 0.3 percent of chitosan, 1 to 5 percent of nicandra physaloides carbohydrate gum and the balance of water. According to the composite film forming preservative for large yellow croakers, the formula is reasonable and scientific, each component is safe and nontoxic, and the edible safety is high; the components are synergistically promoted, so that the composite film forming preservative has high color protection, preservation and anticorrosive performance, the preservation time of large yellow croakers can be greatly prolonged on the premise of ensuring the edible quality and sensory quality of large yellow croakers, and remarkable preservation effects are achieved. The invention also discloses a preparation method for the composite film forming preservative for large yellow croakers. The preparation method comprises the following steps: (1) preparing apple branch polypehnol; (2) preparing nicandra physaloides carbohydrate gum; (3) performing compounding. The steps of the preparation method are simple, and the preparation method is high in operability and suitable for large-scale production and application.

Description

technical field [0001] The invention relates to a preservative, in particular to a compound film-forming preservative for large yellow croaker and a preparation method thereof. Background technique [0002] Large yellow croaker, also known as yellow croaker, large yellow croaker, etc., is one of the four traditional seafood and the main economic fish in my country. Large yellow croaker is rich in nutrients such as protein and fat. Due to its high water content and high fat characteristics, the fish meat is easily spoiled. Factors such as autolytic enzyme reaction, microbial reproduction, fat oxidation, and external pollution in fish will cause the quality of fish to deteriorate, produce bad smell, and cause the decline of sensory quality of fish. Therefore, the fresh-keeping method to large yellow croaker just seems very important. [0003] At present, the commonly used fresh-keeping methods of large yellow croaker include low-temperature preservation, chemical preservatio...

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Problems solved by technology

[0005] The present invention aims to solve the problem of limited and single effects of large yellow croaker preservatives in the prior art, and provides a large yellow croaker composite film-forming preservative with reasonable and scientific formula, good safety, prolonging the fresh-keeping time of large yellow croaker and improving the fresh-keeping effect

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