Effects of Solar-withering and Turn Over Treatment during Indoor-withering on the Formation of Pouchong Tea Aroma
| Autor: | Keiko Tachiyama, Michiko Kawakami, Akio Kobayashi, Tei Yamanishi, W. T.-F. Chiu, I.-M. Juan |
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| Rok vydání: | 1985 |
| Předmět: |
Phenylacetaldehyde
Jasmine lactone integumentary system biology food and beverages Benzyl cyanide biology.organism_classification General Biochemistry Genetics and Molecular Biology chemistry.chemical_compound chemistry Linalool Organic chemistry Food science General Agricultural and Biological Sciences Aroma Geraniol |
| Zdroj: | Agricultural and Biological Chemistry. 49:1655-1660 |
| ISSN: | 0002-1369 |
| DOI: | 10.1080/00021369.1985.10866971 |
| Popis: | The effect of solar-withering and turn over treatment during indoor-withering on the development of pouchong tea aroma were investigated by comparing the aroma compositions of nine tea samples. Each sample was manufactured by different degrees of solar withering and different times of turn over treatment.Among 70 identified constituents of the aroma concentrate, 33 compounds were selected for comparing the aroma compositions.In general, solar-withering and turn over treatment had positive effects on the development of aroma constituents, except for linalool and geraniol, the effect of the turn over treatment being greater than that of solar-withering. The concentrations of hexenyl esters, oxidized products of linalool, aromatic alcohols, phenylacetaldehyde, sesquiterpenes, cis-jasmone, jasmine lactone, benzyl cyanide and indole were increased markedly by turn over treatment, even without solar-withering.Seventeen minutes solar-withering and four turn over treatments seemed to be the most effective to prod... |
| Databáze: | OpenAIRE |
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