Fresh keeping method of phyllostachys praecox bamboo shoots

Abstract

The invention relates to the field of processing of bamboo shoots, in particular to a fresh keeping method of phyllostachys praecox bamboo shoots. The fresh keeping method comprises the following steps of immersing phyllostachys praecox bamboo shoots in an ice water mixture of which the volume is 7-9 times of that of the phyllostachys bamboo praecox shoots, performing stirring for 5 minutes, immersing root segments of the stirred bamboo shoots in a fresh keeping solution for 5-10 minutes, and performing drying by cold wind, wherein the fresh keeping solution is a mixed solution of carbendazoland sodium propionate, the mass percentage concentration of the carbendazol in the fresh keeping solution is 0.45%-0.65%, and the mass percentage concentration of the sodium propionate in the fresh keeping solution is 0.1%-0.2%; dissolving 10-45g of chitosan in 1 liter of a 2% citric acid solution to obtain a film coating agent; immersing the dried phyllostachys praecox bamboo shoots in the film coating agent for 10-25 seconds, and performing standing and drying to form films; compounding a mixed gas of oxygen and carbon dioxide according to the volume ratio of the oxygen to the carbon dioxidebeing (1.5 to 8.5)- (2.0 to 3.0), then performing mixing with 5-30% by volume of nitrogen to compound the mixed gas of the oxygen, the carbon dioxide and the nitrogen, and performing controlled atmosphere storage on the phyllostachys praecox bamboo shoots with the mixed gas of the oxygen, the carbon dioxide and the nitrogen; and packing the phyllostachys praecox bamboo shoots in the mixed gas ofthe oxygen, the carbon dioxide and the nitrogen by food-grade aluminum foil bags.

Description

technical field [0001] The invention belongs to the field of bamboo shoot processing, and in particular relates to a fresh-keeping method of thunder bamboo shoots. Background technique [0002] Bamboo shoots are one of the traditional forest vegetables. They are rich in sugar, protein, cellulose, mineral elements and vitamins and other nutrients. They are delicious and nutritious, and have always been loved by people. Bamboo shoots contain 18 kinds of amino acids, which are rich in essential amino acids for the human body. The total amount of amino acids in fresh bamboo shoots is about 29%. Bamboo shoots also contain a variety of trace elements necessary for the human body, such as Se and Ge. Studies have shown that bamboo shoots are rich in nutrients, high in protein, low in fat, and delicious in taste. They are a forest vegetable with health care functions, and have various health care functions such as weight loss, intestinal cancer prevention, blood fat reduction, and a...

AI Technical Summary

Problems solved by technology

At present, fresh-cut bamboo shoots (bamboo sheaths without the outer cover) have been sold in many large supermarkets in the form of clean vegetables, but they are very prone to lignification and browning