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Hydrophilic and lipophilic antioxidant activities of guava fruits.
Southeast Asian J Trop Med Public Health. 2005; 36 Suppl 4:254-7.SA

Abstract

The objectives of this study were to evaluate the hydrophilic antioxidant activity (AOAH) and the lipophilic antioxidant activity (AOAL); and their correlations with vitamin C, and total phenolic and beta-carotene contents in fresh guava fruits of one white flesh clone ('Allahabad Safeda') and three pink flesh clones ('Fan Retief', 'Ruby Supreme,' and an advanced selection). A ferric reducing antioxidant power assay was used to estimate both AOAH and AOAL from methanol and dichloromethane extracts, respectively. The white flesh clone, 'Allahabad Safeda,' showed higher levels of both AOAH [33.3 microM Trolox equivalents (TE)/g fresh weight (FW)] and AOAL (0.25 microM TE/g FW) than the pink flesh clones that ranged from 15.5 to 30.4 and from 0.12 to 0.13 microM TE/g FW for AOAH and AOAL, respectively. The AOAH was positively correlated with vitamin C (r = 0.92, p < 0.01) and total phenolic (r = 0.97, p < 0.01) but was negatively correlated with beta-carotene (r = -0.73, p = 0.03). The AOAL was not correlated with these antioxidants.

Authors+Show Affiliations

Thaipong K
Department of Horticulture, Kasetsart University, Nakhon Pathom, Thailand. kriengsak.t@ku.ac.th
Boonprakob U
No affiliation info available
Cisneros-Zevallos L
No affiliation info available
Byrne DH
No affiliation info available

MeSH

AntioxidantsAscorbic AcidFlavonoidsFruitHumansPhenolsPlant ExtractsPsidiumbeta Carotene

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

16438219

Citation

Thaipong, Kriengsak, et al. "Hydrophilic and Lipophilic Antioxidant Activities of Guava Fruits." The Southeast Asian Journal of Tropical Medicine and Public Health, vol. 36 Suppl 4, 2005, pp. 254-7.
Thaipong K, Boonprakob U, Cisneros-Zevallos L, et al. Hydrophilic and lipophilic antioxidant activities of guava fruits. Southeast Asian J Trop Med Public Health. 2005;36 Suppl 4:254-7.
Thaipong, K., Boonprakob, U., Cisneros-Zevallos, L., & Byrne, D. H. (2005). Hydrophilic and lipophilic antioxidant activities of guava fruits. The Southeast Asian Journal of Tropical Medicine and Public Health, 36 Suppl 4, 254-7.
Thaipong K, et al. Hydrophilic and Lipophilic Antioxidant Activities of Guava Fruits. Southeast Asian J Trop Med Public Health. 2005;36 Suppl 4:254-7. PubMed PMID: 16438219.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Hydrophilic and lipophilic antioxidant activities of guava fruits. AU - Thaipong,Kriengsak, AU - Boonprakob,Unaroj, AU - Cisneros-Zevallos,Luis, AU - Byrne,David H, PY - 2006/1/28/pubmed PY - 2006/5/5/medline PY - 2006/1/28/entrez SP - 254 EP - 7 JF - The Southeast Asian journal of tropical medicine and public health JO - Southeast Asian J Trop Med Public Health VL - 36 Suppl 4 N2 - The objectives of this study were to evaluate the hydrophilic antioxidant activity (AOAH) and the lipophilic antioxidant activity (AOAL); and their correlations with vitamin C, and total phenolic and beta-carotene contents in fresh guava fruits of one white flesh clone ('Allahabad Safeda') and three pink flesh clones ('Fan Retief', 'Ruby Supreme,' and an advanced selection). A ferric reducing antioxidant power assay was used to estimate both AOAH and AOAL from methanol and dichloromethane extracts, respectively. The white flesh clone, 'Allahabad Safeda,' showed higher levels of both AOAH [33.3 microM Trolox equivalents (TE)/g fresh weight (FW)] and AOAL (0.25 microM TE/g FW) than the pink flesh clones that ranged from 15.5 to 30.4 and from 0.12 to 0.13 microM TE/g FW for AOAH and AOAL, respectively. The AOAH was positively correlated with vitamin C (r = 0.92, p < 0.01) and total phenolic (r = 0.97, p < 0.01) but was negatively correlated with beta-carotene (r = -0.73, p = 0.03). The AOAL was not correlated with these antioxidants. SN - 0125-1562 UR - https://www.unboundmedicine.com/medline/citation/16438219/Hydrophilic_and_lipophilic_antioxidant_activities_of_guava_fruits_ DB - PRIME DP - Unbound Medicine ER -