Ms. Minori Shoji was born in Hiroshima city. Hiroshima is a peace city that is attracted attention as the 44th President of the United States, Barack Obama visited in 2016. Now, she belong to Graduate School of System Engineering, Kindai University in Japan, and then she research plants and other natural products. Until now, she presented a paper about antibacterial activity and deodorizing activity for the seed oil of both Loquat and Bayberry at an academic conference in Japan. In the future, she would love to work in the cosmetics industry.
The climate of Setouchi region in Japan where is warm and has ample rainfall is suitable for fruit cultivation, and many citrus fruits (oranges, lemons etc.) are cultivated. Especially in Akitsu district of Hiroshima prefecture, there is a long tradition of growing loquats.previous reserches reported on components and physiological function loquat seeds. However, there are limited studies on oil extracted from the loquat seed. In this study, we extracted 35.3 g of loquat seed oil from 15.1 kg of Tanaka Biwa (a variety of loquats) which is easy to obtain. Then, we analyzed fatty acid composition of seed oil and examined its utilization. As a result, we found oil components similar to beef tallow and cocoa butter, and the main components were behenic acid lignoceric acid. In the modern society, problems caused by malodor are considered to be one of major issues. Therefore, we examined deodorizing effect of the loquat seed oil on malodor. In consequence, the extracted oil components demonstrated high deodorizing effect on malodor elements including ammonia, trimethylamine, isovaleric acid and nonenal. In adiition, we found high deodorizing effect on allyl methyl sulfide exhibits very high deodorizing activity by considering the mixing ratio of linoleric acid and lignoceric acid. At the present time, pharmacological activity tests of loquat seed oil components are now being examined
Yukiko Matsuo received her Ph. D. degree in 2014 from Tokyo University of Pharmacy and Life Sciences. She has been an assistant professor in the Depertment of Medicinal Pharmacognosy at Tokyo University of Pharmacy and Life Sciences since 2014. Her current research includes isolation and structural determination of plant natural products with tumor-selective cytotoxic activities
Vetiveria zizanioides (Gramineae) is a perennial grass that grows widely in India and Indonesia. V. zizanioides has deep complex root systems, and it is widely used to prevent red soil erosion and soil contamination. The volatile matter obtained from steam distillation of the roots of V. zizanioides, which is commonly called vetiver oil, shows antibacterial, antioxidant, and antifungal activities1 and is used in aromatherapy and perfumery. The roots of V. zizanioides contain sesquiterpenoids,2 such as -vetivone, -vetivone, and isovalencenol, and several flavonoids. However, no systematic phytochemical investigation has been carried out on V. zizanioides roots. During our continuous search for bioactive secondary metabolites of higher plants that yield essential oils, we performed a chemical examination of a methanolic extract of V. zizanioides roots and isolated three new sesquiterpenoids, named vetiverianines A (1), B (2), and C (3), and a known eudesmane sesquiterpenoid, identified as (+)-1,4,6-trihydroxyeudesmane (4). In particular, vetiverianine A (1) has a unique carbon framework of a rigid tricyclic ring system, designated here as the neo-eremophilane skeleton. Vetiverianines B (2) and C (3) are new eremophilane sesquiterpenoids. The structures of 1–3 including their absolute configurations were determined by analysis of NMR, X-ray crystallography, and vibrational circular dichroism (VCD) data. Furthermore, the cytotoxic activity of 1–4 against HL-60 cells is briefly presented. 1) Gupta, S.; Dwivedi, G. R.; Darokar, M. P.; Srivastava, S. K. Med. Chem. Res. 2012, 21, 1283-1289. 2) Filippi, J. J.; Belhassen, E.; Baldovini, N.; Brevard, H.; Meierhenrich, U. J. J. Chromatogr. A 2013, 1288, 127-148