Show simple item record

dc.contributor.authorUnachukwu, Uchenna J.
dc.contributor.authorAhmed, Selena
dc.contributor.authorKavalier, Adam
dc.contributor.authorLyles, James T.
dc.contributor.authorKennelly, Edward J.
dc.date.accessioned2019-01-28T22:38:42Z
dc.date.available2019-01-28T22:38:42Z
dc.date.issued2010-08
dc.identifier.citationUnachukwu, Uchenna J., Selena Ahmed, Adam Kavalier, James T. Lyles, and Edward J. Kennelly. “White and Green Teas (Camellia Sinensis Var. Sinensis): Variation in Phenolic, Methylxanthine, and Antioxidant Profiles.” Journal of Food Science 75, no. 6 (August 2010): C541–C548. doi:10.1111/j.1750-3841.2010.01705.x.en_US
dc.identifier.issn0022-1147
dc.identifier.urihttps://scholarworks.montana.edu/xmlui/handle/1/15184
dc.description.abstractRecent investigations have associated white teas with anti‐carcinogenic, immune‐boosting, and antioxidative properties that may impact human health in a manner comparable to green teas. An in‐depth chemical analysis of white tea types was conducted to quantify polyphenols and antioxidant potential of 8 commercially available white teas, and compare them to green tea. Extraction and HPLC protocols were optimized and validated for the quantification of 9 phenolic and 3 methylxanthine compounds to examine inter‐ and intra‐variation in white and green tea types and subtypes. A sampling strategy was devised to assess various subtypes procured from different commercial sources. Variation in antioxidant activity and total phenolic content (TPC) of both tea types was further assessed by the 1‐1‐diphenyl‐2‐picrylhydrazyl (DPPH) and Folin–Ciocalteau (F–C) assays, respectively. Total catechin content (TCC) for white teas ranged widely from 14.40 to 369.60 mg/g of dry plant material for water extracts and 47.16 to 163.94 mg/g for methanol extracts. TCC for green teas also ranged more than 10‐fold, from 21.38 to 228.20 mg/g of dry plant material for water extracts and 32.23 to 141.24 mg/g for methanol extracts. These findings indicate that statements suggesting a hierarchical order of catechin content among tea types are inconclusive and should be made with attention to a sampling strategy that specifies the tea subtype and its source. Certain white teas have comparable quantities of total catechins to some green teas, but lesser antioxidant capacity, suggesting that white teas have fewer non‐catechin antioxidants present.en_US
dc.language.isoenen_US
dc.rightsThis Item is protected by copyright and/or related rights. You are free to use this Item in any way that is permitted by the copyright and related rights legislation that applies to your use. For other uses you need to obtain permission from the rights-holder(s).en_US
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/en_US
dc.titleWhite and Green Teas (Camellia sinensis var. sinensis): Variation in Phenolic, Methylxanthine, and Antioxidant Profilesen_US
dc.typeArticleen_US
mus.citation.extentfirstpageC541en_US
mus.citation.extentlastpageC548en_US
mus.citation.issue6en_US
mus.citation.journaltitleJournal of Food Scienceen_US
mus.citation.volume75en_US
mus.identifier.categoryHealth & Medical Sciencesen_US
mus.identifier.categorySocial Sciencesen_US
mus.identifier.doi10.1111/j.1750-3841.2010.01705.xen_US
mus.relation.collegeCollege of Education, Health & Human Developmenten_US
mus.relation.departmentHealth & Human Development.en_US
mus.relation.universityMontana State University - Bozemanen_US
mus.data.thumbpage6en_US
mus.contributor.orcidAhmed, Selena|0000-0001-5779-0697en_US


Files in this item

Thumbnail

This item appears in the following Collection(s)

Show simple item record


MSU uses DSpace software, copyright © 2002-2017  Duraspace. For library collections that are not accessible, we are committed to providing reasonable accommodations and timely access to users with disabilities. For assistance, please submit an accessibility request for library material.