Storage of finished jasmine tea
The main factors affecting the quality of jasmine tea during storage are temperature and water content, oxygen and light. In general, the greatest influence is tea water content. Followed by temperature and oxygen, while light is easier to control. In general, the moisture content of finished tea products should be kept below 5%, then the quality will change slowly. The moisture content of finished jasmine tea is close to 8%. Therefore, it is more sensitive to humidity, and the relative humidity of the surrounding environment directly affects the moisture absorption rate of tea. So bulk jasmine tea is best stored in a low-temperature and dry warehouse. The ideal condition is that the temperature is below 5 degrees and the relative temperature is about 50%. However, in the specific implementation, we must also consider the economic effect and adopt a slightly higher temperature.
Oxygen can promote the deterioration of scented tea. Therefore, both large and small packages should be packed tightly to minimize the gap in the container so as to reduce the contact between tea and oxygen. In order to better protect the quality of the finished products, when conditions permit, consideration should be given to sealing packaging with air extraction and nitrogen filling.
In the storage of bulk tea, attention should also be paid to the timely handling of the stacked tail tea with less than one box of tea in the box. Because of the large gap and more oxygen in the tea box at the end of the pile, it has a great influence on my color and taste. And it is easy to cause lipid peroxidation in tea and become aging or even deteriorate.
The storage of jasmine tea in retail outlets must be paid more attention because the packaging has sometimes been taken apart. Usually don't open the box casually. If necessary, it should also be opened and sealed to prevent the loss of aroma and the return of tea.
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Scenting system of jasmine tea
Scented tea is a unique kind of tea in China, which is made from fragrant flowers with high fragrance or sweet fragrance. The varieties produced are jasmine tea, white orchid tea, pearl orchid tea, generation scented tea and sleeve scented tea. Among them, jasmine tea is of high quality and large quantity and sells well. According to statistics, it accounts for about 70% of the country's total scented tea. In order to improve the quality of jasmine tea, the scenting technology is introduced as follows. 1 grasp the timing of picking jasmine [Jasminumsambac (L) Aiton] is a typical temperament flower, with the strongest aroma when it just blossoms. Because of
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Prevention and Control of Diseases and insect pests of Jasmine
1, disease ① brown spot, timely cut off diseased leaves and diseased branches, spray 80% mancozeb wettable powder 500-700 times, or 80% mancozeb wettable powder 400-600 times, every 10-15 days, spray 3-5 times continuously. When spraying, it should be sprayed evenly on both sides of the blade. ② white silk disease was sprayed 1000 times in the base of the plant and the surrounding soil at the initial stage of the disease, and then sprayed again after 7-10 days. After that, use 70% topiramate.
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