Strawberry fruits are bright, juicy and nutritious. However, because of its high water content, the tissue is soft and susceptible to mechanical damage and microbial infestation, it will begin to discolor, change its taste, and cause rot in the room temperature for 1-2 days, and the commodity rate will decline rapidly. Therefore, how to prolong the shelf life or shelf life of strawberry fruit is a problem to be solved in production and sales. This article mainly introduces some methods of fresh-keeping strawberry at normal temperature to facilitate storage and sales. 1. Preservation of fresh chitosan: Take healthy and non-mechanical wounded strawberry fruits in chitosan coating solution for 20 seconds, then remove them and air dry them in plastic baskets with perforations. Fruit thickness 6- 8 cm, stored at room temperature (25-30°C), kept humidity above 90% in the first three days, maintained natural humidity (60-70%) after three days, and stored for 5 days, the good fruit rate reached 85.2%. Chitosan coating solution formulation: 1.25% chitosan, 1.25% tartaric acid, 0.5% cellulose. 2, lysozyme treatment: According to a recent report in Japan, strawberry fruit with a unit of lysozyme treatment, can extend the shelf life of the fruit, can be well preserved at room temperature for 3 days. 3, plastic film packaging: first fruit in a small container, do not pile too thick, so as not to squeeze each other, cover polyethylene plastic film to reduce evaporation and reduce weight loss. With this treatment, the storage period of strawberries can be significantly prolonged. 4, dehydrated acetic acid treatment: Gray mold is the main cause of strawberry rot, dehydrated acetic acid is a broad-spectrum food preservative, can effectively inhibit the growth of mold, yeast and bacteria. Dipping the just-picked strawberries in a 0.25-0.5% dehydrated acetic acid solution for 30 seconds significantly prolongs the storage period. 5, phytic acid soaked fruit preservation: phytic acid chemical name is calcium inositol calcium phosphate, which has complex metal ions, antioxidants and reduce the role of pH, if used in conjunction with other preservatives, its preservation effect is significant. For example, 0.1-0.15% phytic acid solution + 0.5-0.10% sorbic acid + 0.10% peracetic acid immersed in fruit, at room temperature the strawberries can be preserved for 6-8 days. If comprehensive measures are adopted, timely harvesting will be carried out, healthy strawberry fruit will be harvested at a suitable maturity, lightly flitted and released to prevent skin damage and pathogen invasion, and pretreatment (including pharmaceuticals and packaging) before storage. , To carry out bactericidal anti-corrosion, to avoid moisture loss, etc.; low-temperature refrigeration, inhibition of respiration, slow down the metabolic reaction, inhibit nutrient loss, control bacterial growth, etc.; reasonable management, timely inspection, identify problems, take early measures and other comprehensive measures to improve the strawberry Storage and preservation effect.
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