Efficient and environmentally friendly method for carotenoid extraction from Paracoccus carotinifaciens utilizing naturally occurring Z-isomerization-accelerating catalysts |
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| Affiliation: | 1. Faculty of Science & Technology, Meijo University, Shiogamaguchi, Tempaku-ku, Nagoya, 468-8502, Japan;2. Biotechnology R&D Group, JXTG Nippon Oil & Energy Corporation, Chidoricho, Naka-ku, Yokohama, 231-0815, Japan;1. Department of Materials Science, The University of Shiga Prefecture, Hassaka, Hikone 522-8533, Japan;2. Research & Development Division, Kagome Co., Ltd., Nishitomiyama, Nasushiobara 329-2762, Japan;1. Department of Materials Process Engineering, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8603, Japan;2. Graduate School of Bioagricultural Sciences, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8601, Japan;3. Innovation Division, Kagome Company, Limited, Nishitomiyama, Nasushiobara 329-2762, Japan;4. Department of Chemical Systems Engineering, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8603, Japan;1. Department of Chemical Engineering, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8603, Japan;2. Graduate School of Bioagricultural Sciences, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8601, Japan;3. Innovation Division, Kagome Company Limited, Nishitomiyama, Nasushiobara 329–2762, Japan;1. Department of Chemistry, Zhejiang University, Hangzhou 310027, Zhejiang, China;2. Zhejiang Institute for Food and Drug Control, Hangzhou 310051, Zhejiang, China |
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| Abstract: | This study aimed to improve the efficiency of Paracoccus carotinifaciens-derived carotenoid (astaxanthin, adonirubin, adonixanthin) extraction using environmentally friendly Z-isomerization-accelerating catalysts. Adding naturally occurring catalysts such as isothiocyanates and polysulfides to the extraction solvent significantly improved the efficiency of carotenoid extraction, likely because of enhanced solubility of carotenoid Z-isomers compared with all-E-isomers. Indeed, addition of the catalysts markedly increased the content of carotenoid Z-isomers in the resulting extract. The use of a catalyst allyl isothiocyanate, which is abundantly included in Brassicaceae plant family, at high extraction temperature and long extraction time led to increased carotenoid recovery and Z-isomer content. These findings will enhance the efficiency of organic solvent-based extraction of carotenoids from carotenoid-rich sources. Numerous studies have reported that the Z-isomers of carotenoids exhibit greater bioavailability and antioxidant capacity than the all-E-isomers. Hence, the method proposed here utilizing Z-isomerization-accelerating catalysts could enhance both the extraction efficiency and beneficial health effects of carotenoids. |
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| Keywords: | Astaxanthin Adonirubin Adonixanthin Allyl isothiocyanate |
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