Tags

Type your tag names separated by a space and hit enter

Antioxidant phytochemicals in hazelnut kernel (Corylus avellana L.) and hazelnut byproducts.
J Agric Food Chem. 2007 Feb 21; 55(4):1212-20.JA

Abstract

Antioxidant efficacies of ethanol extracts of defatted raw hazelnut kernel and hazelnut byproducts (skin, hard shell, green leafy cover, and tree leaf) were evaluated by monitoring total antioxidant activity (TAA) and free-radical scavenging activity tests [hydrogen peroxide, superoxide radical, and 2,2-diphenyl-1-picrylhydrazyl (DPPH) radical], together with antioxidant activity in a beta-carotene-linoleate model system, inhibition of oxidation of human low-density lipoprotein (LDL) cholesterol, and inhibition of strand breaking of supercoiled deoxyribonucleic acid (DNA). In addition, yield, content of phenolics, and phenolic acid profiles (free and esterified fractions) were also examined. Generally, extracts of hazelnut byproducts (skin, hard shell, green leafy cover, and tree leaf) exhibited stronger activities than hazelnut kernel at all concentrations tested. Hazelnut extracts examined showed different antioxidative efficacies, expected to be related to the presence of phenolic compounds. Among samples, extracts of hazelnut skin, in general, showed superior antioxidative efficacy and higher phenolic content as compared to other extracts. Five phenolic acids (gallic acid, caffeic acid, p-coumaric acid, ferulic acid, and sinapic acid) were tentatively identified and quantified (both free and esterified forms). Extracts contained different levels of phenolic acids. These results suggest that hazelnut byproducts could potentially be considered as an excellent and readily available source of natural antioxidants.

Authors+Show Affiliations

Department of Biochemistry, Memorial University of Newfoundland, St. John's, Newfoundland A1B 3X9, Canada. fshahidi@mun.caNo affiliation info availableNo affiliation info available

Pub Type(s)

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

Language

eng

PubMed ID

17249682

Citation

Shahidi, Fereidoon, et al. "Antioxidant Phytochemicals in Hazelnut Kernel (Corylus Avellana L.) and Hazelnut Byproducts." Journal of Agricultural and Food Chemistry, vol. 55, no. 4, 2007, pp. 1212-20.
Shahidi F, Alasalvar C, Liyana-Pathirana CM. Antioxidant phytochemicals in hazelnut kernel (Corylus avellana L.) and hazelnut byproducts. J Agric Food Chem. 2007;55(4):1212-20.
Shahidi, F., Alasalvar, C., & Liyana-Pathirana, C. M. (2007). Antioxidant phytochemicals in hazelnut kernel (Corylus avellana L.) and hazelnut byproducts. Journal of Agricultural and Food Chemistry, 55(4), 1212-20.
Shahidi F, Alasalvar C, Liyana-Pathirana CM. Antioxidant Phytochemicals in Hazelnut Kernel (Corylus Avellana L.) and Hazelnut Byproducts. J Agric Food Chem. 2007 Feb 21;55(4):1212-20. PubMed PMID: 17249682.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Antioxidant phytochemicals in hazelnut kernel (Corylus avellana L.) and hazelnut byproducts. AU - Shahidi,Fereidoon, AU - Alasalvar,Cesarettin, AU - Liyana-Pathirana,Chandrika M, Y1 - 2007/01/24/ PY - 2007/1/26/pubmed PY - 2007/6/7/medline PY - 2007/1/26/entrez SP - 1212 EP - 20 JF - Journal of agricultural and food chemistry JO - J. Agric. Food Chem. VL - 55 IS - 4 N2 - Antioxidant efficacies of ethanol extracts of defatted raw hazelnut kernel and hazelnut byproducts (skin, hard shell, green leafy cover, and tree leaf) were evaluated by monitoring total antioxidant activity (TAA) and free-radical scavenging activity tests [hydrogen peroxide, superoxide radical, and 2,2-diphenyl-1-picrylhydrazyl (DPPH) radical], together with antioxidant activity in a beta-carotene-linoleate model system, inhibition of oxidation of human low-density lipoprotein (LDL) cholesterol, and inhibition of strand breaking of supercoiled deoxyribonucleic acid (DNA). In addition, yield, content of phenolics, and phenolic acid profiles (free and esterified fractions) were also examined. Generally, extracts of hazelnut byproducts (skin, hard shell, green leafy cover, and tree leaf) exhibited stronger activities than hazelnut kernel at all concentrations tested. Hazelnut extracts examined showed different antioxidative efficacies, expected to be related to the presence of phenolic compounds. Among samples, extracts of hazelnut skin, in general, showed superior antioxidative efficacy and higher phenolic content as compared to other extracts. Five phenolic acids (gallic acid, caffeic acid, p-coumaric acid, ferulic acid, and sinapic acid) were tentatively identified and quantified (both free and esterified forms). Extracts contained different levels of phenolic acids. These results suggest that hazelnut byproducts could potentially be considered as an excellent and readily available source of natural antioxidants. SN - 0021-8561 UR - https://www.unboundmedicine.com/medline/citation/17249682/Antioxidant_phytochemicals_in_hazelnut_kernel__Corylus_avellana_L___and_hazelnut_byproducts_ L2 - https://dx.doi.org/10.1021/jf062472o DB - PRIME DP - Unbound Medicine ER -