Changes in the quality parameters of seedling tea due to height and frequency of mechanical harvesting
Quality parameters of black tea change due to the use of a mechanical harvester, varying plucking round lengths and plucking heights. Compared with hand plucking, mechanically harvested teas have inferior quality as measured by volatile flavour compounds, theaflavins and caffeine. Similarly, longer...
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| Veröffentlicht in: | Journal of the science of food and agriculture 1991, Vol.55 (2), p.241-249 |
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| container_end_page | 249 |
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| container_issue | 2 |
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| container_title | Journal of the science of food and agriculture |
| container_volume | 55 |
| creator | Owuor, Philip O Othieno, Caleb O Robinson, Janet M Baker, David M |
| description | Quality parameters of black tea change due to the use of a mechanical harvester, varying plucking round lengths and plucking heights. Compared with hand plucking, mechanically harvested teas have inferior quality as measured by volatile flavour compounds, theaflavins and caffeine. Similarly, longer plucking rounds produced inferior teas compared with shorter rounds. Raising mechanical plucking height by 2 cm from the previous plucking height caused less quality deterioration than increasing the height by 1 cm irrespective of plucking rounds. |
| doi_str_mv | 10.1002/jsfa.2740550209 |
| format | Article |
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Compared with hand plucking, mechanically harvested teas have inferior quality as measured by volatile flavour compounds, theaflavins and caffeine. Similarly, longer plucking rounds produced inferior teas compared with shorter rounds. Raising mechanical plucking height by 2 cm from the previous plucking height caused less quality deterioration than increasing the height by 1 cm irrespective of plucking rounds.</description><identifier>ISSN: 0022-5142</identifier><identifier>EISSN: 1097-0010</identifier><identifier>DOI: 10.1002/jsfa.2740550209</identifier><language>eng</language><publisher>London: John Wiley & Sons, Ltd</publisher><subject>black seedling tea ; caffeine ; Camellia sinensis ; chemical composition ; compounds ; CTC manufacture ; Mechanical harvesting ; tasters' evaluations ; theaflavins ; thearubigins ; volatile flavour</subject><ispartof>Journal of the science of food and agriculture, 1991, Vol.55 (2), p.241-249</ispartof><rights>Copyright © 1991 John Wiley & Sons, Ltd</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c3599-53d0a97f199ac5cc0768227d0f113b5e39e659a2cc3f65811596d51459f8f8213</citedby><cites>FETCH-LOGICAL-c3599-53d0a97f199ac5cc0768227d0f113b5e39e659a2cc3f65811596d51459f8f8213</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://onlinelibrary.wiley.com/doi/pdf/10.1002%2Fjsfa.2740550209$$EPDF$$P50$$Gwiley$$H</linktopdf><linktohtml>$$Uhttps://onlinelibrary.wiley.com/doi/full/10.1002%2Fjsfa.2740550209$$EHTML$$P50$$Gwiley$$H</linktohtml><link.rule.ids>314,780,784,1417,4024,27869,27923,27924,27925,45574,45575</link.rule.ids></links><search><creatorcontrib>Owuor, Philip O</creatorcontrib><creatorcontrib>Othieno, Caleb O</creatorcontrib><creatorcontrib>Robinson, Janet M</creatorcontrib><creatorcontrib>Baker, David M</creatorcontrib><title>Changes in the quality parameters of seedling tea due to height and frequency of mechanical harvesting</title><title>Journal of the science of food and agriculture</title><addtitle>J. Sci. Food Agric</addtitle><description>Quality parameters of black tea change due to the use of a mechanical harvester, varying plucking round lengths and plucking heights. Compared with hand plucking, mechanically harvested teas have inferior quality as measured by volatile flavour compounds, theaflavins and caffeine. Similarly, longer plucking rounds produced inferior teas compared with shorter rounds. Raising mechanical plucking height by 2 cm from the previous plucking height caused less quality deterioration than increasing the height by 1 cm irrespective of plucking rounds.</description><subject>black seedling tea</subject><subject>caffeine</subject><subject>Camellia sinensis</subject><subject>chemical composition</subject><subject>compounds</subject><subject>CTC manufacture</subject><subject>Mechanical harvesting</subject><subject>tasters' evaluations</subject><subject>theaflavins</subject><subject>thearubigins</subject><subject>volatile flavour</subject><issn>0022-5142</issn><issn>1097-0010</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>1991</creationdate><recordtype>article</recordtype><sourceid>K30</sourceid><recordid>eNqFkMtOwzAQRS0EEuWxZmuJdejYrp1arFAF5SWQeC4t44yblDQptgv070lVBGLFajbn3Jm5hBwwOGIAvD-N3h7xfABSAge9QXoMdJ4BMNgkvY7gmWQDvk12YpwCgNZK9YgflbaZYKRVQ1OJ9G1h6yot6dwGO8OEIdLW04hY1FUzoQktLRZIU0tLrCZlorYpqA_4tsDGLVfsDF0XWTlb09KGd4ypE_fIlrd1xP3vuUsez04fRufZ9e34YnRynTkhtc6kKMDq3DOtrZPOQa6GnOcFeMbEi0ShUUltuXPCKzlkTGpVdF9J7Yd-yJnYJYfr3Hlou5NiMtN2EZpupWECBONKDnhH9deUC22MAb2Zh2pmw9IwMKsyzapM81tmZxyvjY-qxuV_uLm8Pzv5Y2dru4oJP39sG16NykUuzfPN2IyVuGJSPpk78QWO7Ifb</recordid><startdate>1991</startdate><enddate>1991</enddate><creator>Owuor, Philip O</creator><creator>Othieno, Caleb O</creator><creator>Robinson, Janet M</creator><creator>Baker, David M</creator><general>John Wiley & Sons, Ltd</general><general>Published for the Society of Chemical Industry by Elsevier Applied Science</general><scope>BSCLL</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>HJHVS</scope><scope>IZSXY</scope><scope>K30</scope><scope>PAAUG</scope><scope>PAWHS</scope><scope>PAWZZ</scope><scope>PAXOH</scope><scope>PBHAV</scope><scope>PBQSW</scope><scope>PBYQZ</scope><scope>PCIWU</scope><scope>PCMID</scope><scope>PCZJX</scope><scope>PDGRG</scope><scope>PDWWI</scope><scope>PETMR</scope><scope>PFVGT</scope><scope>PGXDX</scope><scope>PIHIL</scope><scope>PISVA</scope><scope>PJCTQ</scope><scope>PJTMS</scope><scope>PLCHJ</scope><scope>PMHAD</scope><scope>PNQDJ</scope><scope>POUND</scope><scope>PPLAD</scope><scope>PQAPC</scope><scope>PQCAN</scope><scope>PQCMW</scope><scope>PQEME</scope><scope>PQHKH</scope><scope>PQMID</scope><scope>PQNCT</scope><scope>PQNET</scope><scope>PQSCT</scope><scope>PQSET</scope><scope>PSVJG</scope><scope>PVMQY</scope><scope>PZGFC</scope></search><sort><creationdate>1991</creationdate><title>Changes in the quality parameters of seedling tea due to height and frequency of mechanical harvesting</title><author>Owuor, Philip O ; Othieno, Caleb O ; Robinson, Janet M ; Baker, David M</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c3599-53d0a97f199ac5cc0768227d0f113b5e39e659a2cc3f65811596d51459f8f8213</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>1991</creationdate><topic>black seedling tea</topic><topic>caffeine</topic><topic>Camellia sinensis</topic><topic>chemical composition</topic><topic>compounds</topic><topic>CTC manufacture</topic><topic>Mechanical harvesting</topic><topic>tasters' evaluations</topic><topic>theaflavins</topic><topic>thearubigins</topic><topic>volatile flavour</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Owuor, Philip O</creatorcontrib><creatorcontrib>Othieno, Caleb O</creatorcontrib><creatorcontrib>Robinson, Janet M</creatorcontrib><creatorcontrib>Baker, David M</creatorcontrib><collection>Istex</collection><collection>CrossRef</collection><collection>Periodicals Index Online Segment 19</collection><collection>Periodicals Index Online Segment 30</collection><collection>Periodicals Index Online</collection><collection>Primary Sources Access—Foundation Edition (Plan E) - West</collection><collection>Primary Sources Access (Plan D) - International</collection><collection>Primary Sources Access & Build (Plan A) - MEA</collection><collection>Primary Sources Access—Foundation Edition (Plan E) - Midwest</collection><collection>Primary Sources Access—Foundation Edition (Plan E) - Northeast</collection><collection>Primary Sources Access (Plan D) - Southeast</collection><collection>Primary Sources Access (Plan D) - North Central</collection><collection>Primary Sources Access—Foundation Edition (Plan E) - Southeast</collection><collection>Primary Sources Access (Plan D) - South Central</collection><collection>Primary Sources Access & Build (Plan A) - UK / I</collection><collection>Primary Sources Access (Plan D) - Canada</collection><collection>Primary Sources Access (Plan D) - EMEALA</collection><collection>Primary Sources Access—Foundation Edition (Plan E) - North Central</collection><collection>Primary Sources Access—Foundation Edition (Plan E) - South Central</collection><collection>Primary Sources Access & Build (Plan A) - International</collection><collection>Primary Sources Access—Foundation Edition (Plan E) - International</collection><collection>Primary Sources Access (Plan D) - West</collection><collection>Periodicals Index Online Segments 1-50</collection><collection>Primary Sources Access (Plan D) - APAC</collection><collection>Primary Sources Access (Plan D) - Midwest</collection><collection>Primary Sources Access (Plan D) - MEA</collection><collection>Primary Sources Access—Foundation Edition (Plan E) - Canada</collection><collection>Primary Sources Access—Foundation Edition (Plan E) - UK / I</collection><collection>Primary Sources Access—Foundation Edition (Plan E) - EMEALA</collection><collection>Primary Sources Access & Build (Plan A) - APAC</collection><collection>Primary Sources Access & Build (Plan A) - Canada</collection><collection>Primary Sources Access & Build (Plan A) - West</collection><collection>Primary Sources Access & Build (Plan A) - EMEALA</collection><collection>Primary Sources Access (Plan D) - Northeast</collection><collection>Primary Sources Access & Build (Plan A) - Midwest</collection><collection>Primary Sources Access & Build (Plan A) - North Central</collection><collection>Primary Sources Access & Build (Plan A) - Northeast</collection><collection>Primary Sources Access & Build (Plan A) - South Central</collection><collection>Primary Sources Access & Build (Plan A) - Southeast</collection><collection>Primary Sources Access (Plan D) - UK / I</collection><collection>Primary Sources Access—Foundation Edition (Plan E) - APAC</collection><collection>Primary Sources Access—Foundation Edition (Plan E) - MEA</collection><jtitle>Journal of the science of food and agriculture</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Owuor, Philip O</au><au>Othieno, Caleb O</au><au>Robinson, Janet M</au><au>Baker, David M</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Changes in the quality parameters of seedling tea due to height and frequency of mechanical harvesting</atitle><jtitle>Journal of the science of food and agriculture</jtitle><addtitle>J. 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| identifier | ISSN: 0022-5142 |
| ispartof | Journal of the science of food and agriculture, 1991, Vol.55 (2), p.241-249 |
| issn | 0022-5142 1097-0010 |
| language | eng |
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| source | Periodicals Index Online; Wiley Online Library All Journals |
| subjects | black seedling tea caffeine Camellia sinensis chemical composition compounds CTC manufacture Mechanical harvesting tasters' evaluations theaflavins thearubigins volatile flavour |
| title | Changes in the quality parameters of seedling tea due to height and frequency of mechanical harvesting |
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