2Higdon J V, Frei B. Tea catechins and polyphenols: health effects, metabolism, and antioxidant functions [J]. Crlt Rev Food Sci Nutr, 2003, 43(1):89-143.
3Negro C, Tommasi L, Miceli A. Phenolic compounds and antioxidant activity from red grape marc extracts [J]. Bioresour Technol, 2003, 87(1): 41-44.
4Saleem A, Kivela H, Pihlaja K. Antioxidant activity of pine bark constituents [J]. Z Naturforsch, 2003, 58(5-6): 351-354.
5Packer L, Rimbach G, Virgili F. Antioxidant acitvity and biologic properties of a procynidin-rich extract from pine(Pinus maritlma) bark, pycnogenol [J]. Free Radic Biol Med, 1999, 27(5-6): 704-724.
6Leal P F, Braga M E, Sato D N, et al. Functional properties of spice extracts obtained via supercritical fluid extraction[J]. J Agric Food Chem, 2003, 51(9): 2520-2525.
7Sasaki ~ Takei M, Kobayashi M, et al. Effect of glycyrrhizin, an active component of licorice roots, on HIV replication in cultures of peripheral blood mononuclear cells.from HIV-seropositive patients [J]. Pathobiology, 2002, 70(4) : 229-236.
8Cinatl J, Morgenstern B, Bauer G, et al. Glycyrrhizin, an active component of liquorice roots, and replication of SARS-associated coronavirus [J]. Lancet, 2003, 361 (9374): 2045-2046.
9Mantle D, Wilkins R M, Gok M A. Comparison of antioxidant activity in commercial Ginkgo biloba preparations [J]. J Altern Complem Med, 2003, 9(5): 625-629.
10Tian Y M , Tian H J, Zhang G Y, et al. Effects of Ginkgo biloba extract (EGb 761) on hydroxyl radical-induced thymocyte apoptosls and on age-related thymic atrophy and peripheral immune dysfunctions in mice [J]. Mech Ageing Dev,2003, 124(8-9): 977-983.
