阅读说明：本技术 基于氧化电位水预冷和自发气调包装的樱桃低温贮藏方法 (Cherry low-temperature storage method based on oxidation potential water precooling and modified atmosphere packaging ) 是由 裘纪莹 赵双枝 周庆新 陈相艳 陈蕾蕾 辛雪 王凤丽 王军华 于 2019-09-17 设计创作，主要内容包括：本发明属于农产品贮藏技术领域,具体涉及一种基于氧化电位水预冷和自发气调包装的樱桃低温贮藏方法。本发明的方法包括：(1)挑选新鲜的八九成熟的甜樱桃鲜果；(2)清洗经挑选的鲜果,除去泥沙、浮果、叶片；(3)电位水预冷和杀菌；(4)进行果实大小分级；(5)将步骤(4)中经分级的鲜果进行冷风干燥。本发明采用微酸性氧化还原电位水进行预冷,预冷的同时杀菌,自发调节包装内的气体和水分环境,起到保鲜和抑制好氧性霉菌生长的目的。本发明很好的解决了樱桃产地商品化预处理及冷库贮藏过程中贮藏期短、以及长霉、褐变、水烂等问题,同时该发明实现了对甜樱桃产地现有商品化预处理设备的改造,带来了优异的防腐保鲜效果。(The invention belongs to the technical field of agricultural product storage, and particularly relates to a cherry low-temperature storage method based on oxidation potential water precooling and modified atmosphere packaging. The method of the invention comprises the following steps: (1) selecting fresh eighty nine ripe sweet cherry fresh fruits; (2) cleaning the selected fresh fruits, and removing silt, floating fruits and leaves; (3) pre-cooling and sterilizing by using electric potential water; (4) carrying out fruit size classification; (5) and (4) drying the classified fresh fruits in the step (4) by cold air. The invention adopts subacidity oxidation-reduction potential water for precooling, and the precooling and the sterilization are carried out simultaneously, thus spontaneously adjusting the gas and moisture environment in the package and achieving the purposes of keeping fresh and inhibiting the growth of aerobic mold. The invention well solves the problems of short storage period, long mildew, browning, water rotting and the like in the commercial pretreatment of cherry producing areas and the storage process of a refrigeration house, and meanwhile, the invention realizes the transformation of the existing commercial pretreatment equipment of the sweet cherry producing areas, thereby bringing excellent preservative and fresh-keeping effects.)

1. The cherry low-temperature storage method based on oxidation potential water precooling and modified atmosphere packaging comprises the following steps:

(1) selecting fresh cherries, wherein the fresh cherries are eighty-nine ripe fresh fruits, are fresh and clean, have bright colors, do not have collision and crush injury, plant diseases and insect pests, have no mould and disease spots and have no other fruit surface defects;

(2) washing the selected fresh fruits in the step (1) by using tap water, and removing silt, floating fruits and leaves;

(3) precooling and sterilizing the fresh fruits cleaned in the step (2) by using subacid oxidation-reduction potential water;

(4) carrying out fruit size classification on the fresh fruits treated by the electric potential water in the step (3);

(5) and (4) drying the classified fresh fruits in the step (4) by cold air.

2. The method for storing cherries at low temperature based on oxidation potential water precooling and modified atmosphere packaging according to claim 1, further comprising (6) packaging the dried fresh fruits and (7) storing the fruits in a refrigerator.

3. The method for storing cherries at low temperature based on oxidation potential water precooling and modified atmosphere packaging of claim 1, wherein the method comprises the following steps:

(3) in the method, the pH = 4.0-6.8, the ORP = 800-1300 mv and the content of available chlorine is 50-300 mg/L, the subacid oxidation-reduction potential water is precooled to 5 ℃, and a subacid oxidation-reduction potential water device is provided with a circulating cooling and filtering system to keep clean and constant temperature; the method for pre-cooling and sterilizing the subacid oxidation-reduction potential water adopts a soaking or continuous spraying mode, and the treatment lasts for 5-30 min.

4. The method for storing cherries at low temperature based on oxidation potential water precooling and modified atmosphere packaging of claim 1, wherein the method comprises the following steps:

(3) in the method, the pH value, the ORP and the available chlorine content of the slightly acidic oxidation-reduction potential water which is recycled are detected every 2-4 h, and if the indexes are not in the ranges of pH = 4.0-6.8, ORP = 800-1300 mv and the available chlorine content is 50-300 mg/L, the newly prepared potential water is replaced.

5. The method for storing cherries at low temperature based on oxidation potential water precooling and modified atmosphere packaging of claim 1, wherein the method comprises the following steps:

(4) in the method, a water-in-film diameter sorting machine or a photoelectric sorting machine is adopted for sorting.

6. The method for storing cherries at low temperature based on oxidation potential water pre-cooling and modified atmosphere packaging of claim 1,

(5) and the classified fruits are conveyed by a conveying belt with holes, a clean cold air system is adopted for drying, and an ultraviolet lamp irradiation sterilization device is arranged above the conveying belt.

7. The method for storing cherries at low temperature based on oxidation potential water pre-cooling and modified atmosphere packaging of claim 1,

(6) the packaging bag is made of a special plastic packaging material suitable for low-temperature storage of cherries, the thickness of the packaging bag is 30 ~ 50 microns, the cherry packaging adopts a sealing packaging mode, the fruit loading is more than 90%, and the outer packaging adopts a plastic basket or a carton.

8. The method for storing cherries at low temperature based on oxidation potential water precooling and modified atmosphere packaging as claimed in claim 1, wherein in (6), the materials of the packaging bag comprise: 0.1-0.5 part of graphene, 0.01-0.03 part of silver nitrate, 0.1-1.0 part of modified pullulan and 100 parts of a polymer resin base film.

9. The cherry low-temperature storage method based on oxidation potential water precooling and modified atmosphere packaging as claimed in claim 1, wherein in the step (7), the storage temperature of a cold storage is 0-4 ℃, and the relative humidity is 90-98%.