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Harmless introduced Tieguanyin tea
First, the pollution-free tea processing
1. Plant choices. Tea factory to stay away from the toilet, Hooksett, garbage dump, livestock market, housing areas, to avoid conventional farmland; Conventional tea garden waste and emissions of industrial enterprises, and other real and potential sources of pollution; Processing plants surrounding areas should disable aerosol pesticides, organic phosphorus, organic chlorine insecticides. The processing workshops health needs, so plants require ample water, good water quality and water to drinking water quality requirements. Site requirements: around a good ecological environment, no dusty, green and beautify the surroundings of the site, the laying of the main roads should be hard-surface, the plant should be good drainage.
2. Processing workshops requirements. Workshop to ventilation, lighting bright, walls and the ground to maintain bright and clean, easy cleaning. The use of tea processing machinery, appliances and other equipment must not contain pollutants materials. Water must be cleaned before use in tea processing and processing after the various equipment must maintain clean sanitation. The factory to be set up corresponding changing, washing, lighting, moisture-proof, anti - mildew, bacterial, prevention, prevention of cockroaches and garbage piling up the facilities. The eradication of pests to adopt physical, mechanical and biological methods. Plants must establish a comprehensive health management system and record-keeping system.
3. The processing requirements. Tea production in the pollution-free, pollution-free tea production must go through the process of training, and establish the basic pollution-free tea processing concepts, familiar with and master the pollution-free tea processing practices and skills. For directly involved in the pollution-free tea processing staff in the pre-job and every year have to undergo a medical examination, health setting for posts, or any other infectious disease patients can not posts. Processing must maintain good personal hygiene, wash hands must enter the work site, changing, Parker, wearing hats and masks work.
4. Fresh leaves of raw materials. Harmless tea raw materials must come from pollution-free tea, tea mixed with conventional avoid. Acceptance into the fresh leaves of plants from a member of acceptance, in accordance with its varieties, harvest, uniform, freshness, etc., grading, weighing, registration, in the reactor, respectively Besides. The hurricanes or mixed with a high fever and other fresh change of red leaves poor, should be Besides, a demotion processing. For oil, gasoline contaminated fresh leaves, not tea tea as a pollution-free raw materials. Fresh leaves of raw materials to fresh, clean, not entrainment Beattie head, and old leaves and other fruit tea inclusions. Costumes should be used fresh leaves utensils clean, ventilation and food of good tea basket or baskets basket. Not allowed to use bags, plastic bags and other flexible packaging materials. Fresh leaves costumes and transport process should be put to light, soft reduction, to reduce mechanical damage. Avoid pressed into, sun, rain and temperature metamorphism avoid fresh leaves, affecting the quality of products. Avoid fresh leaves in storage was contaminated.
5. Processing and requirements. Pollution-free tea from the fresh leaves and conventional tea processing of raw materials shall not be mixed. If a tea processing plant should not only pollution-free tea, but also the processing of conventional tea, dates must be staggered processing, in principle, two types of tea not on the same day processing. Processing should be reasonable, in accordance with the standard tea products, according to the fresh leaves of grade raw materials, processing technology used corresponding to ensure the quality of products.
6. Harmless tea packaging. Harmless tea packaging must meet the strong, clean, moisture-proof, aesthetic requirements. The same group of tea, its packaging style, size, packaging, net weight, and so must be unanimous. Packaging should have labels, and its content is: Tea name, quality and grade of product standards, net content, marketing, site, the batch number, date of production and durability, etc.. Contact tea packaging materials must comply with food hygiene requirements. All packaging materials should not be fungicides, pesticides, preservatives, fumigants, and other items of pollution, prevent the introduction of secondary sources. Harmless tea packaging materials are mainly the following: cardboard, polyethylene (PE), aluminum complex, tinplate tea extinguishers, boxboard, lining materials and fastening materials. Contact tea product packaging material must have preservation properties, such as moisture, oxygen, and so separated, but also no odor. Not using polyvinyl chloride (PVC) and mixed with CFCs (CFC), such as extruded polystyrene for packaging material.
Second, the storage of pollution-free tea
After tea is a kind of processed agricultural products, with the natural flavor mellow ambience, in the course of storage slightly improper, we will lose the original flavor. Metamorphic affect tea is the main reason for moisture, temperature, oxygen and light. Storage in the tea, to the extent possible to reduce these factors on the quality of tea, tea consumption to extend the value. During storage attention should be paid to the following areas:
1. Tea must be dry. Before tea packaging water content must be controlled 5% - 6%. When the moisture content of 7%, any preservation technologies and packaging materials, can maintain the fresh tea flavor. The water content of 10% of tea, tea mildew speed to accelerate.
2. Cold storage. Low-temperature metamorphism tea can reduce the speed. Throughout the experience shows that tea Storage Temperature control in general should be below 5 ° C, -10 ° C preferably in the refrigerator or freezer storage in order to maintain a longer period of time tea flavor unchanged.
3. Low humidity environment. Loose tea is porous and vulnerable surface moisture adsorption characteristics. High humidity in the environment, due to moisture absorption of tea increased water content. Therefore, tea packaging should use waterproof material good products, and tea in the relative humidity of storage 30% - 50% of the environment.
4. Hypoxia environment. Oxygen make tea such as the chemical composition of lipids, tea polyphenols, vitamin C and other oxidation, tea metamorphism. Therefore, the tea packing storage containers of oxygen content should be controlled at 0.1%, basically in a state of anaerobic better.
5. Light storage. Chlorophyll in tea light energy from the oxidation, and other material so that the green tea and recede into brown. Light can also make tea into a "sun and taste," which reduce the tea aroma. Therefore, the tea should be kept light.
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