NoteAntioxidative Actiyity of Hop Bitter Acids and Their Analogues
نویسنده
چکیده
Hop (Humulus ltrptttus L.) cones are uscd not only in brewing of beer but also in folk mcdicine as a tranquilizer or b{ttcr stornachic, In 1950s1960s, some papers reportcd the existence of substances which had estrogen like activity in hop cones,t-3} and Kumai and his colleagues discovered gonadotropin inhibitors containcd in hop cones.`) Unfortunately, the rcported bioactive substanccs have not been isolated or identified in detail, necessitating further investigation o unknown biological activities in hop plants, ln this paper, wc show that bitter acids {1-2) of hop cones and thcir analogues (3-4) have antioxidative activity (Fig. 1). Thc
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