Dissertation > Excellent graduate degree dissertation topics show

Study on Extraction, Oxidation Resistance and Aaroma Component of Hop Concrete

Author: ShuXiang
Tutor: FengZuoShan；HuangWenShu
School: Xinjiang Agricultural University
Course: Of Food Science
Keywords: Hop concrete Extract Antioxidation Aroma Component Heavy Metals
CLC: TS262.5
Type: Master's thesis
Year: 2009
Downloads: 179
Quote: 3
Read: Download Dissertation

Abstract


The hop plant (Humunus Lupulus L.)had been used in the brewage in thousands years, gave characteristic flavor and frank bitter of beer and increased antiseptic capability and anti-biological stability of beer. As forα-acid and flavonoids index, this experiement studied the extraction hop concrete by microraythis.As forα-acid loss percentage index, this experiement studied the dry method of hop. This experiement studied the antioxygen activity of hop concere. The main results were as follows:1 Asα-acid index, the optimal technical processing were:extracting 2 times, soaking 40min, liquid ratio 1:15, microwave time 25s, microwave power 40%, solvent concentration 60%.2 As flavonoids index, the optimal technical processing were:extractingof 2 times, soaking 40min, liquid ratio 1:20, microwave time 20s, microwave power 60%, solvent concentration 60%.3 In hops drying paper, study the drying hops in the process of placing the way, temperature and convection condition on drying rate andα-acid loss ratio impact, results showed that the three factors on the drying rate andα-acid loss ratio have a significant influenced. The best of fresh hops drying conditions are: hops should be put in place is the way the high value of temperature from 40℃, convection situation in check increases. Different temperatures through the drying hops to preserve the experiment, reached dry hops in the -20℃cryopreservation more appropriate.4 Through the microwave extraction of the orthogonal test to determine the antioxidant components of hops flower the optimum extract conditions was ethanol concentration 45%, liquid ratio 1:20, microwave power 80%, microwave time 30s. The antioxidant effects of hop concrete was 630.36.5 Through the GC-MS to analysis aroma component of dry hop,hop drop and hop concrete.The result showed that aroma component of different hop samples was almost same,but it had small differences.6 Through the ICP-MS to determin the fifteen kinds of heavy metals content of dry hop,hop drop and hop concrete.The results showed that heavy metals content of hop concrete was less than ohers’.

Related Dissertations

  1. Studies on Extraction, Isolation, Purification and Antioxidation Activity of Flavonoids from the Fruits of Avicennia Marina,S793.9
  2. Study on Extraction,purification and Antioxidant Activity of Wheat Germ Polysaccharides,TS210.1
  3. Citrus aurantium extract and flavonoids in new exploration adsorption separation,TQ461
  4. Effects of Extract of Leave Ginkgo Biloba on Ultrastructure of Apoptotic Neurons That Surround Intracerebral Hemorrhage in Rats,R285.5
  5. Studies on Huanglian Jiedu Decoction to Probe into Semi-bionic Extraction Mode,R284.1
  6. Study on Effects of the Extractions of Perilla Seed on Nonalcoholic Fatty Liver Disease in Rabbits,R285.5
  7. Rabbit skin inflamed by vaccinia virus extract injection on fracture healing and its molecular mechanism of experimental study,R965
  8. The Effects of Extracts of Plant on Tobacco Mosaic Virus and Their Mechanism to Control Disease,S435.72
  9. Study on Processing Technology and Efficacy Evalution of 30% Cangersu Emulsifiable Concentrate,S482.2
  10. Ganoderma lucidum polysaccharides liquid fermentation, extraction and purification and modification of sulfated,S567.31
  11. Study on the Extraction、Antioxidant Activity and Stability of Curcumin,S567.239
  12. Extraction and Isolation of Chemical Composition from Viola Tianshanica Maxim and Their Antioxidantive Activities,S567.239
  13. Yunnan Rauwolfia yohimbine extract and separation of,S567.19
  14. Study of Extraction and Purification Technology on Steviol Glycosides from Stevia Rebaudiana Bertoni,TQ464.3
  15. Study on Extraction, Purification and the Microcapsule of Xingjiang Qiamagu,TQ461
  16. Study on the Extraction and Antibacterial Activity of Turmeric Oil and the Purification of Curcumin,TQ461
  17. Study on Extraction and Antioxidation Synergistic Effect of Lycopene,TQ611
  18. Extraction, Purification, Antioxidation Activity and Stability of Red Pigment from Mulberries,TS264.4
  19. Preparation and Properties of Dietary Fibre from Barley Spent Grains and Its Application in Steam Bread,TS213.2
  20. Isolation and Charaterization of Hull-less Barley Starches,TS231
  21. Ku-shui Rose Essential Oil and Rose Residue Pigment Extraction and Purification,TS264.4

CLC: > Industrial Technology > Light industry,handicrafts > Food Industry > Brewing industry > A variety of wine and its manufacturing > Beer
© 2012 www.DissertationTopic.Net  Mobile