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Cho Y, Kim BH, Kim Y, Kim IH. Concentration of docosahexaenoic acid from tuna oil via a two lipase-catalyzed reaction. Food Chem 2024; 458:140253. [PMID: 38964107 DOI: 10.1016/j.foodchem.2024.140253] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2024] [Revised: 05/30/2024] [Accepted: 06/25/2024] [Indexed: 07/06/2024]
Abstract
Docosahexaenoic acid (DHA) was concentrated successfully in the glyceride fractions from tuna oil via a two-step enzyme reaction involving hydrolysis and ethanolysis. In the first step, Candida rugosa lipase-catalyzed hydrolysis was carried out to concentrate DHA in the glyceride fractions. The DHA content in the glyceride fraction after hydrolysis increased from 30% in the initial tuna oil to 46%. In the second step, Lipozyme RM IM-catalyzed ethanolysis was conducted with the reaction mixture from the first step to further concentrate DHA in the glyceride fraction. In this step, the reaction mixture obtained from the first step was employed directly in Lipozyme RM IM-catalyzed ethanolysis without additional steps needed to remove free fatty acid. Finally, DHA was concentrated from an initial content of 30% in the tuna oil to 68.4% in the glyceride fractions via a novel two-step enzyme reaction strategy.
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Affiliation(s)
- Yejie Cho
- Department of Integrated Biomedical and Life Sciences, Graduate School, Korea University, 145 Anam-Ro, Sungbuk-Gu, Seoul 02841, Republic of Korea
| | - Byung Hee Kim
- Department of Food and Nutrition, Sookmyung Women's University, Seoul, 04310, Republic of Korea
| | - Yangha Kim
- Department of Nutritional Science and Food Management, Ewha Womans University, Seoul, 03760, Republic of Korea
| | - In-Hwan Kim
- Department of Integrated Biomedical and Life Sciences, Graduate School, Korea University, 145 Anam-Ro, Sungbuk-Gu, Seoul 02841, Republic of Korea.
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Ge L, Cheng K, Lu W, Cui Y, Yin X, Jiang J, Li Y, Yao H, Liao J, Xue J, Shen Q. Enzymatic Preparation, In-Depth Molecular Analysis, and In Vitro Digestion Simulation of Palmitoleic Acid (ω-7)-Enriched Fish Oil Triacylglycerols. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2024; 72:8859-8870. [PMID: 38564481 DOI: 10.1021/acs.jafc.3c09159] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/04/2024]
Abstract
In this study, an enzymatic reaction was developed for synthesizing pure triacylglycerols (TAG) with a high content of palmitoleic acid (POA) using fish byproduct oil. The characteristics of synthesized structural TAGs rich in POA (POA-TAG) were analyzed in detail through ultrahigh-performance liquid chromatography Q Exactive orbitrap mass spectrometry. Optimal conditions were thoroughly investigated and determined for reaction systems, including the use of Lipozyme TL IM and Novozym 435, 15 wt % lipase loading, substrate mass ratio of 1:3, and water content of 2.5 and 0.5 wt %, respectively, resulting in yields of 67.50 and 67.45% for POA-TAG, respectively. Multivariate statistical analysis revealed that TAG 16:1/16:1/20:4, TAG 16:1/16:1/16:1, TAG 16:1/16:1/18:1, and TAG 16:0/16:1/18:1 were the main variables in Lipozyme TL IM and Novozym 435 enzyme-catalyzed products under different water content conditions. Finally, the fate of POA-TAG across the gastrointestinal tract was simulated using an in vitro digestion model. The results showed that the maximum release of free fatty acids and apparent rate constants were 71.44% and 0.0347 s-1, respectively, for POA-TAG lipids, and the physical and structural characteristics during digestion depended on their microenvironments. These findings provide a theoretical basis for studying the rational design of POA-structural lipids and exploring the nutritional and functional benefits of POA products.
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Affiliation(s)
- Lijun Ge
- Collaborative Innovation Center of Seafood Deep Processing, Institute of Seafood, Zhejiang Gongshang University, Hangzhou 310012, China
| | - Keyun Cheng
- Panvascular Diseases Research Center, The Quzhou Affiliated Hospital of Wenzhou Medical University, Quzhou People's Hospital, Quzhou 324000, China
| | - Weibo Lu
- Collaborative Innovation Center of Seafood Deep Processing, Institute of Seafood, Zhejiang Gongshang University, Hangzhou 310012, China
| | - Yiwei Cui
- Collaborative Innovation Center of Seafood Deep Processing, Institute of Seafood, Zhejiang Gongshang University, Hangzhou 310012, China
| | - Xuelian Yin
- Collaborative Innovation Center of Seafood Deep Processing, Institute of Seafood, Zhejiang Gongshang University, Hangzhou 310012, China
| | - Jianjun Jiang
- Taizhou Hospital of Zhejiang Province Affiliated to Wenzhou Medical University, Taizhou 318020, China
| | - Yijing Li
- Department of Cardiology, Ningbo Ninth Hospital, Ningbo 315020, China
| | - Haiming Yao
- Yunhe Street Community Health Service Center, Linping, Hangzhou 311100, China
| | - Jie Liao
- Collaborative Innovation Center of Seafood Deep Processing, Institute of Seafood, Zhejiang Gongshang University, Hangzhou 310012, China
| | - Jing Xue
- Collaborative Innovation Center of Seafood Deep Processing, Institute of Seafood, Zhejiang Gongshang University, Hangzhou 310012, China
| | - Qing Shen
- Panvascular Diseases Research Center, The Quzhou Affiliated Hospital of Wenzhou Medical University, Quzhou People's Hospital, Quzhou 324000, China
- Laboratory of Food Nutrition and Clinical Research, Institute of Seafood, Zhejiang Gongshang University, Hangzhou 310012, China
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3
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Liang C, Duan X, Shahab M, Zheng G. Biocatalytic synthesis of chiral five-membered carbasugars intermediates utilizing CV2025 ω-transaminase from Chromobacterium violaceum. J Biosci Bioeng 2023; 135:369-374. [PMID: 36934040 DOI: 10.1016/j.jbiosc.2023.02.009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2022] [Revised: 02/17/2023] [Accepted: 02/27/2023] [Indexed: 03/19/2023]
Abstract
(S)-4-(Hydroxymethyl)cyclopent-2-enone is a key intermediate in the synthesis of chiral five-membered carbasugars, which can be used to synthesize a large number of pharmacologically relevant carbocyclic nucleosides. Herein, CV2025 ω-transaminase from Chromobacterium violaceum was selected based on substrate similarity to convert ((1S,4R)-4-aminocyclopent-2-enyl)methanol to (S)-4-(hydroxymethyl)cyclopent-2-enone. The enzyme was successfully cloned, expressed in Escherichia coli, purified and characterized. We show that it has R configuration preference in contrast with the conventional S preference. The highest activity was obtained below 60 °C and at pH 7.5. Cations Ca2+ and K+ enhanced activity by 21% and 13%, respectively. The conversion rate reached 72.4% within 60 min at 50 °C, pH 7.5, using 0.5 mM pyridoxal-5'-phosphate, 0.6 μM CV2025, and 10 mM substrate. The present study provides a promising strategy for preparing five-membered carbasugars economically and efficiently.
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Affiliation(s)
- Chaoqun Liang
- State Key Laboratory of Chemical Resources Engineering, Beijing University of Chemical Technology, Beijing 100029, China
| | - Xiuyuan Duan
- State Key Laboratory of Chemical Resources Engineering, Beijing University of Chemical Technology, Beijing 100029, China
| | - Muhammad Shahab
- State Key Laboratory of Chemical Resources Engineering, Beijing University of Chemical Technology, Beijing 100029, China
| | - Guojun Zheng
- State Key Laboratory of Chemical Resources Engineering, Beijing University of Chemical Technology, Beijing 100029, China.
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Preparation of γ‐linolenic acid rich triacylglycerol from borage oil via a two‐step lipase‐catalyzed reaction. J AM OIL CHEM SOC 2023. [DOI: 10.1002/aocs.12678] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
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LI Y, LEE X, GUO J, FENG J, XU C, BAI Y, GUO S, WANG F. Study on the enrichment of palmitoleic acid in Sn-2 monoester from sea-buckthorn fruit oil. FOOD SCIENCE AND TECHNOLOGY 2023. [DOI: 10.1590/fst.107722] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/18/2023]
Affiliation(s)
- Ying LI
- North University of China, China
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Kim BH, Hwang J, Akoh CC. Liquid microbial lipase – Recent applications and expanded use through immobilization. Curr Opin Food Sci 2023. [DOI: 10.1016/j.cofs.2023.100987] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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