The processing technology of γ-aminobutyric acid tea has been identified.
The successful "processing Technology of γ-aminobutyric Acid Tea", led by Dr. Lin Zhi of the Tea Institute of the Chinese Academy of Agricultural Sciences, recently passed the expert appraisal organized by the Department of Science and Technology of Zhejiang Province.
The appraisal committee listened to the technical research report of the project team and reviewed the tea samples. after careful consideration, the appraisal committee agreed that the technology was comprehensive and systematic, had a number of innovations, filled the domestic gap, and ranked at the international leading level in similar research. The main research results are as follows:
1. Seven tea varieties suitable for producing γ-aminobutyric acid tea were selected for the first time, and the picking standard of fresh leaves was determined as one bud, three or four leaves and new shoots.
two。 The vacuum anaerobic treatment technology of fresh tea leaves, the processing technology of high quality γ-aminobutyric acid green tea, the vacuum anaerobic / aerobic alternating treatment technology of fresh tea leaves and the processing technology of high quality γ-aminobutyric acid black tea were put forward, which can obviously increase the content of γ-aminobutyric acid in tea with reliable process parameters and high technical maturity.
3. The product has good sensory quality characteristics, no "smelly smell". The content of γ-aminobutyric acid in green tea is more than 2.5 mg / g (up to 6.62 mg / g, 2-3 times that of similar products in Japan), and that of black tea is more than 2.0 mg / g (up to 4.13 mg / g).
4. The vacuum anaerobic treatment machine for fresh tea leaves was successfully developed at home and abroad, which laid a good foundation for the industrial production of γ-aminobutyric acid tea.
5. The technology has been demonstrated in Zhejiang, Anhui and other places, the product quality is stable and the economic benefit is obvious.
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Breeding Management techniques of Rhododendron
Propagation methods: rhododendron can be propagated by sowing, cutting, grafting, striping and other methods. 1. The seed setting rate of rhododendron is high, there are many seeds, the germination rate is high, and the plasticity and vitality of seedlings are strong, but the growth is slow, the culture is difficult, and the offspring are not necessarily ideal, so seeds are rarely used in production. It can only be used in the following cases: first, to cultivate rootstocks; second, to obtain new varieties by cross breeding; and third, to introduce excellent wild species. (1) seed harvest: Xiao fruit changed from green to brown.
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Common diseases of rhododendron
1. Leaf swelling disease. Before the disease, especially during the tapping and leaf spreading, Bordeaux solution of 1purl 200 can be sprayed, and the diseased leaves can be removed in time. Before germination, 0.3-0.5 Bordeaux solution or Bordeaux solution of 1 handkerb 200 can be sprayed 2-3 times, usually once every 7-10 days. After the disease, 65-80% mancozeb 500 times or 0.3-0.5 Baomesulphur mixture can be sprayed 3-4 times, once every 7-10 days. 2. Leaf spot and brown spot. Spray 7 from May to August
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