Dissertation > Excellent graduate degree dissertation topics show

The Physiological and Biochemical Changes and Aroma Formation During ZhuoQing Procedure in Oolong Tea (Camillia Sinensis L.) Manufacture

Author: HuangFuPing
Tutor: ChenWei
School: Fujian Agriculture and Forestry University
Course: Botany
Keywords: Oolong Tea Yaoqing Zuoqing Lipid peroxidation The aroma components
CLC: TS272.59
Type: Master's thesis
Year: 2001
Downloads: 314
Quote: 3
Read: Download Dissertation

Abstract


On the basis of previous studies, the selection of oolong tea, cinnamon varieties (Camellia Sinensis L.) fresh leaves as raw material, three different times Yaoqing processing, natural withering way to control the southern Fujian oolong tea processing of oolong green process moisture content, soluble protein and its components, membrane lipid peroxidation parameters malonic aldehyde (MDA), superoxide dismutase (SOD), superoxide anion radical (O 2 - ) generation rate, polyphenol oxidase (PPO) activity and its isoenzymes esterase isozymes Determination of β-galactosidase enzyme activity as well as tea conventional biochemical composition and aroma components discussed oolong do the Green process physiological and biochemical changes its formation and quality. The results show that: 1. Shake Green can accelerate the loss of water to promote protein degradation or precipitation of different intensity shake Green do the Aoba water, soluble protein content changes significantly affect the greater the intensity of rolling green, the faster the decrease in moisture content of soluble protein. 2. Shake Green to promote O 2 - generation, shake Green 2 - generation rate affect the strength of O shake Green heavier O 2 - generation rate accelerated; and proper drying green early in the Zuoqing, shake Green to improve the activity of SOD; rolling green strength of SOD activity also impact, heavy shaking inhibition of SOD activity increased; the role natural withering of Yaoqing can promote massive accumulation of MDA. 3. Appropriate water loss is conducive to the increase in PPO activity, reduce PPO activity Yaoqing role. Drying green, rolling green do the the Aoba polyphenol oxidase E 2 isoenzyme activity increased, E 6 isoenzyme activity decreased. 4. Fresh leaves, leaf esterase isozymes 9, E 4 E 6 , the E 7 E 8 as the main enzyme with each treatment new enzyme with produce, the rolling green under E 6 isoenzyme activity decreased. 5. Yaoqing role in promoting β-galactosidase activity was enhanced, but the different effects of different intensities, heavier shake Green is not conducive to the β-galactosidase activity was enhanced. 6. The shake Green water extract, polyphenols, catechins, total soluble sugars, sucrose, glucose and fructose the content with Zuoqing process to gradually reduce; greater the strength, reduced material content is greater. Makes the blue period, total amino acids rise or fall; rolling green strength, do Aoba less total amino acids. 7. The essential oils total closely related to the quality of the tea with Zuoqing process, a sharp increase. Shake Green strength, aroma major component hexanal, n-pentanol, linalool oxide I linalool oxide II, Linalool (2) - acid -3 the - has enester + Benzene has more aldehyde, α-farnesene, geraniol, phenethyl alcohol, β-Ziluo ketone, jasmone, nerolidol, indole accumulation nerolidol largest increase.

Related Dissertations

  1. Distribution of Volatile Acid and Volatile Alkali and Its Relationship with Quality Indexes,S572
  2. Development of Detection Methods of Effective Biological Components from Tea by High Performance Liquid Chromatography and Their Applications in the Analysis of Fenghuang Oolong Tea,TS272.7
  3. Analysis of Nanguo Pear Aroma Components and Its Variation during Storage,S661.2
  4. Experimental Study of GUI QIN MISTURE on Adriamycin-induced Nephropathy in Rats,R285.5
  5. Edaravone promote functional recovery of sciatic nerve injury in early experimental study,R965
  6. Effect of Carnosic Acid on Carbon Tetrachloride (CCl4)-induced Liver Injury,R285.5
  7. Study on the Fruit Quality and Juice Processing Technology of Hybrid Oranges,TS255.44
  8. China Akiko local varieties ripe pear fruit aroma components Diversity,S661.2
  9. Peony blossom and aroma substances in the aging process and the related changes in enzyme activity,S685.11
  10. Study on Evaluation of the "Pride" Brand about Major Tobacco Leaf Quality,S572
  11. Effects of Combined Application Organic Fertilizer and Chemical Fertilizer on Yields and Quality and the Main Aroma of Flue-cured Tobacco,S572
  12. Experimental Studies on Interventional Effect of Paeonol on Atherosclerotic Rabbits,R285.5
  13. Hepatoprotective Effect and Antioxidative Mechanism of Chaihu Yugan Decoction on D-galactosamine-induced Liver Injury in Rats,R285.5
  14. Dynamic Analysis of Aroma Components in Different Parts of Apple Fruits,S661.1
  15. The History, Actual State and Developing Trend of Mechanization of Oolong Tea in Taiwan and Fujian Province,S233.75
  16. Experimental Study on the Efficacy and Underlying Mechanism of Hyperbaric Oxygen Treatment for Traumatic Brain Injury,R651.15
  17. Chromatography Analysis of Chemical Composition of Three Types of Wine,O657.7
  18. Cabernet Sauvignon grape varieties in different regions Comparison of aroma substances,S663.1
  19. Analysis the Physiological Changes of Oriental Sweet Melon during Postharvest Storage,S652
  20. Four Types of Tea Composition Analysis,TS272
  21. Study on the Processing Technology and Flavor Substance of Whey Mixed Fermented Beverage,TS275.4

CLC: > Industrial Technology > Light industry,handicrafts > Food Industry > Beverage cold manufacturing industry > Tea > A variety of tea > Other
© 2012 www.DissertationTopic.Net  Mobile