7results about How to "Delayed maturation" patented technology

The invention relates to a method for prolonging shelf life of agricultural products by using a BOPE (biaxially oriented polyethylene) film, which is characterized in that PE (polyethylene) and BOPE film packaging are respectively applied to fresh tomato fruits (breathing climacteric change) and strawberry fruits (non-breathing climacteric change), the weight loss ratio, malondialdehyde and oxidation trend of the fruits are obviously reduced, and the activity of antioxidant enzyme POD (peroxidase) is obviously improved. The weight loss ratio of the strawberries packaged by the BOPE film is lower than that of a control group at the end of the storage period, the hardness and the soluble solid content of the fruits are higher than those of the control group, and the phenomena of aging, water loss, hardness and soluble solid (TSS) reduction of the harvested strawberries in the storage process are effectively delayed. The weight loss ratio of the tomato fruits packaged by the BOPE film is obviously reduced compared with that of a control group, and a good effect is achieved in the aspects of keeping the hardness and the soluble solid content of the fruits.

The invention provides a method for preserving cherry tomatoes through combination of a low-voltage electrostatic field and modified atmosphere packaging and application of the method, and belongs to the technical field of preservation. The method comprises the following steps: pre-cooling cherry tomatoes, packaging the cherry tomatoes with a modified atmosphere packaging material, treating the cherry tomatoes in a low-voltage electrostatic field after packaging, and storing the cherry tomatoes. The low-voltage electrostatic field treatment is combined with the packaging treatment, so that the respiration rate can be reduced, and the gas environment in the package can be changed, thereby reducing the consumption of nutrient substances caused by respiration, improving the capability of cherry tomatoes for removing active oxygen, inhibiting membrane lipid peroxidation, reducing the accumulation of malondialdehyde, enhancing the antioxidant level and delaying the maturation and aging of the picked cherry tomatoes; the fresh quality of the cherry tomatoes is effectively maintained.

The application provides a nanocellulose-based edible preservative liquid, a preparation method and a use method thereof. The nanocellulose-based edible preservative liquid comprises a nanocellulose solution, beeswax and glycerol. The preparation method comprises the following steps: mixing the nanocellulose solution, the beeswax and the glycerol according to a proportion and heating to melt the beeswax to obtain a mixed liquid; then, stirring and emulsifying the mixed liquid to obtain a nanocellulose emulsion; finally, performing vacuum defoaming treatment on the nanocellulose emulsion to obtain the nanocellulose-based edible preservative liquid. The application develops an edible and easy-to-wash preservative liquid based on nanocellulose, adopts a dipping coating mode to perform coating film treatment on fruits and vegetables, forms a micro-nano level preservative coating layer on the surface of the fruits and vegetables, can effectively reduce the loss of water and nutrients on the surface and inside of the fruits and vegetables, reduces the gas permeability of the preservative coating layer, and significantly enhances the mechanical strength of the preservative coating layer.

The present invention belongs to the technical field of food processing, and discloses a method for improving the quality of fresh glutinous corn by inhibiting respiration and oxygen permeability. The method uses fresh ears of fresh glutinous corn as raw materials, adds 1-MCP and star anise oil in the storage stage before processing, cleans and removes impurities, pre-treats, cooks, cools, screens packaging materials for vacuum packaging, sterilizes and cools, and obtains the fresh glutinous corn. The present invention inhibits the respiration rate by adding 1-MCP (1-methylcyclopropene) and star anise oil in the storage stage before processing. And compare the oxygen permeability of three different packaging materials and the residual oxygen content under different vacuum rates, and select the most suitable vacuum packaging material for fresh glutinous corn. Thereby effectively inhibiting the aging and softening of fresh glutinous corn and the bag swelling phenomenon caused by gas residue in the vacuum packaging bag during the sterilization process, which is conducive to improving the edible quality of fresh glutinous corn.

The invention provides a potassium permanganate loaded attapulgite / silicon dioxide aerogel gas scavenger and a preparation method, and relates to the field of food preservation, the potassium permanganate loaded attapulgite / silicon dioxide aerogel gas scavenger comprises an inorganic porous composite carrier and KMnO4 loaded on the inorganic porous composite carrier; the porous inorganic composite carrier is ATP / SiO2 aerogel formed by attapulgite ATP and SiO2, and is specifically obtained by adsorbing a KMnO4 solution by ATP modified SiO2 aerogel and drying; the technical obstacle that the SiO2 aerogel and the KMnO4 cannot be directly combined due to the fact that the SiO2 aerogel is easy to reduce the KMnO4 is overcome, the reducibility of the aerogel is eliminated, the structural stability of the material is enhanced, the formability and the thermal stability of the material are guaranteed, and the KMnO4 loading capacity of the material is greatly improved.

The invention discloses a composition and application for inhibiting the growth of Podocarpus fruit and protecting branches and leaves, the composition comprises the following active ingredients: ethephon, aminoethyl hexanoate, benzylamine·gibberellic acid, amino acid water-soluble fertilizer and macronutrient fertilizer, wherein the mass ratio of the ethephon, aminoethyl hexanoate, benzylamine·gibberellic acid, amino acid water-soluble fertilizer and macronutrient fertilizer is (12-20): (1.2-2): (0.72-0.9): (1.2-1.8): (9-18). The composition of the invention can inhibit the growth of Podocarpus fruit, promote the shedding of Podocarpus fruit, reduce the number of Podocarpus fruit swelling, thereby achieving the purpose of reducing the nutrient consumption of Podocarpus fruit on the tree body, and can also protect the tender branches and buds of the fruit tree, solving the cost and safety problems caused by artificial labor.

The utility model discloses a multi-grid folding fruit packaging box, including folding packaging box main part, the inner bottom of folding packaging box main part places humidity adjusting pad, humidity adjusting pad is polyester fiber blended water -retaining cotton material, the side of folding packaging box main part is far apart all is fixedly connected with plastic frame, the side of folding packaging box main part is far apart all is set up with a plurality of air hole, every plastic frame all is equipped with two quick -release structure, every plastic frame's inside all slidingly connected with the absorption box, every absorption box's inside all is equipped with ethylene absorbent. The utility model discloses, through setting up absorption box and sealing ring, sealing ring seals, makes the ethylene absorbent in absorption box inside absorption folding packaging box main part inside ethylene gas, reduces the maturation and senescence process of fruit, avoids the softening, the discoloration, the flavor drop of fruit, even overripe and rotten.