The present invention was inoculated into green yeast as a fermentation strain relates to a composition containing as an active ingredient fermented tea extract after obtained after a predetermined time fermentation, while having high preference, serum and reducing cholesterol and neutral fat in the liver, to suppress the vasoconstriction, which has excellent vasorelaxation ability is useful for blood circulation improvement, stroke through such blood circulation-improving function, myocardial infarction, hypertension, hyperlipidemia, diseases an effective health food products such as diabetes or obesity, can be used, such as in pharmaceuticals. .FIELD 1本発明は、酵母を発酵菌株として緑茶に接種し、一定時間発酵させた後に得られた後発酵茶抽出物を有効成分として含有する組成物に関し、優れた嗜好性を有しながらも、血清及び肝のコレステロール及び中性脂肪を減少させ、血管収縮を抑制し、優れた血管弛緩能を有し、血液循環改善に有用であり、このような血液循環改善機能を通じて脳卒中、心筋梗塞症、高血圧、高脂血症、糖尿または肥満のような疾患に効果的な健康食品、医薬品などで使用することができる。【選択図】図1
