Total Phenols, Antioxidant Potential and Tyrosinase Inhibitory Activity of Walnut (Juglans regia L.) Leaf, Husk and Seed

被引：8
作者：
Akin, M. [1 ]
Arabaci, G. [2 ]
Saki, N. [1 ]
机构：
[1] Kocaeli Univ, Dept Chem, Kocaeli, Turkey
[2] Sakarya Univ, Dept Chem, Sakarya, Turkey
来源：
ASIAN JOURNAL OF CHEMISTRY | 2013年 / 25卷 / 16期
关键词：
Juglans regia L; Total phenols; Antioxidant potential; Tyrosinase activity; Walnut; EXTRACTS; LEAVES;
D O I：
10.14233/ajchem.2013.15526
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
The present study reports the total phenolic contents, antioxidant potentials and tyrosinase inhibitory activity of the leaf, green husk and seed of walnut (Juglans regia L.) produced in Turkey. The total phenolic contents and antioxidant activity studies were carried out at two different extraction times (2 and 18 h) while the anti-tyrosinase activity was investigated at 2 h extraction time. For both extraction times, leaf extracts showed the highest amount of phenols [121.08 and 133.05 mg/g of gallic equivalent (GAE)] and DPPH (2,2-diphenyl-1-picrylhydrazyl) scavenging activity (86.66 and 93.33 %), respectively and the inhibitory efficiency of leaf extract (IC50 3.99 mg/mL) was determined to be much stronger than the seed and husk extracts. The inhibition type and K-i values were determined for the extracts. The results of this study suggested that walnut leaf, husk and seed can be used as an excellent, easily accessible source of natural antioxidant as well as the tyrosinase inhibitor.
引用
收藏
页码：9337 / 9340
页数：4
相关论文
共 24 条
[1]  
Altuntas E., 2009, INT J FOOD ENG, V5, P1, DOI DOI 10.2202/1556-3758.1577
[2]   Human cancer cell antiproliferative and antioxidant activities of Juglans regia L. [J].
Carvalho, Marcia ;
Ferreira, Pedro J. ;
Mendes, Vanda S. ;
Silva, Renata ;
Pereira, Jose A. ;
Jeronimo, Carmen ;
Silva, Branca M. .
FOOD AND CHEMICAL TOXICOLOGY, 2010, 48 (01) :441-447
[3]   Antioxidant and tyrosinase inhibition properties of leaves and rhizomes of ginger species [J].
Chan, E. W. C. ;
Lim, Y. Y. ;
Wong, L. F. ;
Lianto, F. S. ;
Wong, S. K. ;
Lim, K. K. ;
Joe, C. E. ;
Lim, T. Y. .
FOOD CHEMISTRY, 2008, 109 (03) :477-483
[4]   An Updated Review of Tyrosinase Inhibitors [J].
Chang, Te-Sheng .
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES, 2009, 10 (06) :2440-2475
[5]   Tyrosinase inhibitory activity of native plants from central Argentina: Isolation of an active principle from Lithrea molleoides [J].
Chiari, M. E. ;
Joray, M. B. ;
Ruiz, G. ;
Palacios, S. M. ;
Carpinella, M. C. .
FOOD CHEMISTRY, 2010, 120 (01) :10-14
[6]   Antioxidant and anti proliferative activities of common vegetables [J].
Chu, YF ;
Sun, J ;
Wu, XZ ;
Liu, RH .
JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY, 2002, 50 (23) :6910-6916
[7]   Characterization of polyphenol oxidase from butter lettuce (Lactuca sativa var. capitata L.) [J].
Gawlik-Dziki, Urszula ;
Zlotek, Urszula ;
Swieca, Michal .
FOOD CHEMISTRY, 2008, 107 (01) :129-135
[8]   Fate of apple peel phenolics during cool storage [J].
Golding, JB ;
McGlasson, WB ;
Wyllie, SG ;
Leach, DN .
JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY, 2001, 49 (05) :2283-2289
[9]  
HATANO T, 1988, CHEM PHARM BULL, V36, P2090
[10]   α-Glycosidase inhibitory activity of hexagalloylglucose from the galls of Quercus infectoria [J].
Hwang, JK ;
Kong, TW ;
Baek, NI ;
Pyun, YR .
PLANTA MEDICA, 2000, 66 (03) :273-274
123