Corn seed storage technology in summer

First, the characteristics of corn embryos 1. Embryos, easy to absorb moisture. The embryo of corn seed accounts for about 30% of the grain volume, and the weight only accounts for 10% to 20% of the grain. The embryo structure is loose, contains many soluble organic substances, and is easily hygroscopic. Therefore, the moisture content of corn seed that is stored in the warehouse is easily increased and exceeds the specified standard. 2. Suitable for mold reproduction, easy to mold. The embryos of corn contain more sugar, protein and fat, which are suitable for the growth and reproduction of moulds. As the temperature rises in the summer, molds multiply, making it easy to mold the seed. 3. Fat, easy to rancid and lose vitality. The corn embryo concentrates 80% to 90% of the whole grain. In summer, when the seed contains large amounts of moisture, the fat is easily decomposed under the action of lipase, producing fatty acids, increasing the acidity, destroying the structure of the embryo, and reducing the seed life. force. 4. Short life under normal storage conditions. According to the data, the seed temperature is over 18°C ​​and the water content is above 13%. It is difficult for the seeds to pass through the summer. If the air is stored under the relative humidity of 80% for 8 months, the germination power will be lost. Under normal conditions, the germination rate for storage for one year dropped to 84% to 90%, and it decreased to 79% to 84% in one and a half years of storage and to 45% to 76% in the two and a half years of storage. To sum up, under the general conditions, Wang Mi's seed has a short shelf life and is difficult to safely pass through the summer. It must be highly valued. Second, the management of corn seed during storage 1. Precipitation and drying. Maize seeds stored every other year must reduce the moisture content below 12%. Usually taken: 1 ventilation and loose. That is, when the temperature is low and dry in winter and spring, natural or mechanical ventilation is adopted to reduce the moisture content of the seeds. 2 Drying. When the seed moisture content exceeds 13%, it should be dried. The drying of the cement field should be carried out before the temperature rises, and pay attention to the thickness and overturn in time to prevent scald seeds. Cannot be stored hot. It is best to dry seeds in the low temperature period in spring, and then keep the seeds in a low-temperature sealed condition to suppress breathing and prolong life. 2. Moisture-proof and dampness. The main way for the seeds to absorb moisture is to absorb moisture from the air, flood the ground, and leak rain. Therefore, it is necessary to start from these three aspects; 1 to prevent moisture absorption from the air (cooling and dispersing moisture). This is the main link of the moisture-proofing of seeds. Since humidity and temperature outside the warehouse are generally higher than those inside the warehouse during the summer, the walls, doors, windows, and wind tunnels of the warehouse must be inspected in a timely manner to keep it in a closed state. For warehouses with poor sealing performance, the seeds can also be covered with plastic films, dried sacks, and canvas. However, when the humidity outside the warehouse, the temperature is lower than the warehouse, or when one of the temperature and humidity is the same, and the other is low, ventilation can be provided to facilitate cooling and dispersing. 2 Ground moisture protection. Pave asphalt, dry bricks, linoleum, plastics, etc. can be used to prevent groundwater from rising, and wood, bricks, etc. can also be used to raise seeds to separate seeds from the ground. Areas with high groundwater levels should do a good job of drainage around the warehouse. 3 leakproof. Inspect and repair roofs, doors and windows timely to prevent leakage. Always check for rat holes, antholes, etc. to prevent leakage. 3. Check the seeds. In the summer, Wangmi seeds should be regularly inspected and recorded. After the wind and rain, they must be checked in time to find out problems and take measures. The main contents of the inspection are the seed temperature and moisture, and the inspection of insect pests is usually 7 to 10 days. The germination rate is measured 1 time before and after drying and fumigation, and once every 20-30 days, it is best measured in the outdoor soil. 4. Control pests. Corn pests in the warehouse are mainly rice elephants and wheat moths. Much like summer piles on the surface or the lower surface of the ground and ventilation and shade. Wheat moth larvae are more than 20 centimeters high on the top of the seed pile. Adults fly well at dusk and spend more time during the day on wall joints or roofs. After pests are inspected, they must be promptly controlled. In practice, most of them are fumigated with aluminum phosphide after drying, and the dosage is 4-6 grams per cubic meter of seed powder or 6-9 grams (1 to 2 tablets) per tablet. In summer, the temperature is high, the drug spreads quickly, and the fumigation time is short. It can be sealed for 3 to 4 days.

Goji Juice is the use of fresh fruit as raw material, processed products. Goji juice can also be subdivided into flesh drinks, fruit pulp, 100% Chinese Wolfberry Juice, Chinese wolfberry drinks and other types, most of them using the beating process of fruit or fruit edible part processed into unfermented but fermentable slurry, or in the concentrated pulp added to the pulp in the loss of natural concentration Water Equivalent to water, made with the original fruit pulp color, flavor and soluble solids content of the product. 100% Chinese wolfberry juice is non-concentrated reduced wolfberry juice, to maximize the retention of the wolfberry fruit nutrients, while eliminating any ingredients and additives, is a green safe, non-added food.

 

Production Flow Chart:

Fresh Goji Berry Picking â†’ Goji Berry Acceptance â†’Goji Berry Surface Cleaning â†’Rinsing Goji Berry by Drinking Water â†’Rinsing Goji Berry by Pure Water â†’Crushing â†’Separation of the Juice and Pulp â†’Grinding by Colloid Mill â†’High Pressure Homogeneity â†’(Vacuum Concentration) → Sterilization â†’Aseptic Filling â†’ Package â†’Inspection â†’Finished Product.

 

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 Production Specification Sheet

Product Name

Goji Juice

Country of Origin

Ningxia in China

 

ANALYSIS	DESCRIPTION			TEST METHODS
Product Name	Organic Goji Juice	Conventional Goji Juice	Conventional Contracted Goji Juice
BRIX	NLT 13		NLT 36	Organoleptic Inspection
Color	Bright auburn or Purple red			Organoleptic Inspection
Smell and Taste	Characteristic			Organoleptic Inspection
Texture	The fruit pulp contains, a period of few days the juice will appear pulp precipitation			Organoleptic Inspection
Total plate count(cfu/ml)	NMT 1000			GB4789.2
Salmonella	Absence			GB/T 4789.4
Staphylococcus	Absence			GB 4789.10
Pb, mg/kg	NMT 0.5			GB 5009.12
As, mg/kg	NMT 0.5			GB/T 5009.11
Cu, mg/kg	NMT 10.0			GB/T 5009.13
Pesticide Residue	Absence	NMT 0.2ppm		GB/T 19648-2006, GB/T 200769-2008

 

Shelf Life	12 months if stored in a cool ventilated dry place
Package	210kg/drum.,Internal: double aseptic bag. External: Drum
Storage	It should be stored under the dry and ventilated environment

 

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