Summer anise star collected from Lang Son in 2008 was studied. The material was characterized by the essential oil content of 8,75%, moisture content of 13,2%, acid index of mg KOH/g, ester index of mg KOH/g and the relative density of 0,981. The procedures of essential oil distillation and trans-anethol isolation have been studied based on the properties of anise material. The yield of proposed procedure reached 76,4 % and the purity of anethol isolated was 96,83%. | TẠP CHÍ KHOA HỌC VÀ CÔNG NGHỆ Tập 48, số 2, 2010 Tr. 31-35 STUDY ON THE ESSENTIAL OIL AND TRANS –ANETHOL OBTAINED FROM SUMMER VIETNAMESE ANISE STAR NGUYEN THI MINH TU, NATSUKO HORI, VU THANH TRUNG, MASAYOSHI SAWAMURA, PHAM VAN THIEM ABSTRACT Summer anise star collected from Lang Son in 2008 was studied. The material was characterized by the essential oil content of 8,75%, moisture content of 13,2%, acid index of mg KOH/g, ester index of mg KOH/g and the relative density of 0,981. The procedures of essential oil distillation and trans-anethol isolation have been studied based on the properties of anise material. The yield of proposed procedure reached 76,4 % and the purity of anethol isolated was 96,83%. 1. INTRODUCTION Star anise (lllicium verum Hook. f.) belongs to the Magnoliaceae family. It is believed that the place of origin of anise is Southwestern of China and Northern of Vietnam [1]. Today it is largely cultivated in China, Vietnam, India, Laos, Philippines, Japan and Korea [2]. However the commercial production of star anise has been limited to China and Vietnam. In Vietnam, Lang Son province is the most important area where provide major amount of anise, but other provinces such as BacKan, ThaiNguyen, CaoBang and Quang Ninh also contribute [1]. The fruit of anise has function as antibacterial, carminative, diuretic, stimulant and stomachic. It is found in receipt for treatment of abdominal pain, digestive disturbances and complains such as lumbago [1, 4]. Recently, shikimic acid extracted from star aniseed is one of the main materials in the antiviral H1N1 Tamiflu drug for influenza. The essential oil of anise is used to flavor soft drinks, bakery products and liqueurs. It is also used as a flavoring agent in confectionery, candy and chewing gum. The oil finds application in a small way in perfumery and in the pharmaceutical industry [5]. The objective of this study was to investigate the essential oil from anise star material of Lang Son .
