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第 10 期 王舒舒,等: 响应面优化褶皱假丝酵母脂肪酶催化合成木质甾醇油酸酯 ·2095·
程中没有观察到任何化学催化合成法中常见的脱 novel virtual tracking tool[J]. Nutrients, 2019, 11: 1-13.
[2] HE W S, PAN R R, LI L L, et al. Combined lowering effect of
水、氧化等副产物的生成。CUI 等 [12] 报道 Ylip 脂肪 phytosterol esters and tea extracts on lipid profiles in SD rats[J].
Food Science and Technology Research, 2018, 24(5): 875-882.
酶催化甾醇油酸酯合成过程中水活度的控制对反应 [3] DENG Q C, YU X, XU J Q, et al. Single frequency intake of
有着重要的影响;霍振宇等 [17] 报道 Lipozyme 435 脂 a-linolenic acid rich phytosterol esters attenuates atherosclerosis risk
factors in hamsters fed a high fat diet[J]. Lipids in Health and
肪酶催化没食子酸植物甾醇酯合成的过程中分子筛 Disease, 2016, 15: 1-8.
的添加对甾醇的酯化率提升十分明显。本文在最佳 [4] SONG L H, ZHAO X G, OUYANG P L, et al. Combined effect of
n-3 fatty acids and phytosterol esters on alleviating hepatic steatosis
工艺条件下进行了添加 0.4 nm 分子筛(10 g/L)的 in non-alcoholic fatty liver disease subjects: A double-blind
placebo-controlled clinical trial[J]. British Journal of Nutrition, 2020,
10 倍放大验证实验,与文献报道不同的是,分子筛 123(10): 1148-1158.
[5] MENG X H, PAN Q Y, YANG T K. Synthesis of phytosteryl esters
脱 水剂的添加对酯化反应影响不大,转化率为 by using alumina-supported zinc oxide (ZnO/Al 2O 3) from
91.52%。按 1.2.2 节进行纯化处理,得到木质甾醇油 esterification production of phytosterol with patty acid[J]. Journal of
the American Oil Chemists' Society, 2011, 88(1): 143-149.
酸酯,HPLC 纯度达到 98.73%。HE 等 [14] 报道的无 [6] PAN D J (潘丹杰), ZHANG B (张斌), JIANG X J (蒋晓杰), et al.
催化剂合成植物甾醇酯中,来源于油酯脱臭馏出物 Application of novel supported catalyst in synthesis process of
phytosterol ester[J]. CHINA Oils and Fats (中国油脂), 2017, 42(3):
的植物甾醇(质量分数 93.35%)中 β-谷甾醇质量分 59-63.
[7] ROBLES M S, BARRAULT J, VALANGE S. Selective synthesis of
数 42.68%、豆甾醇质量分数 23.38%、菜籽甾醇质 phytosterol esters from natural sterols and fatty methyl esters over
量分数 1.93%、菜油甾醇质量分数 25.36%。在油酸 Mg-containing solid catalysts[J]. Comptes Rendus Chimie, 2011,
14(7): 656-662.
和植物甾醇的物质的量比 3∶1、反应温度 220 ℃、 [8] DONG L (董玲), ZHENG M M (郑明明), GUO P M (郭萍梅), et al.
Advance in lipase-catalyzed synthesis of phytosterol esters[J].
反应时间 4 h 时,总转化率为 99.1%,其中 β-菜油 CHINA Oils and Fats (中国油脂), 2012, 37(6): 58-62.
甾醇、豆甾醇和 β-谷甾醇的活性最高,转化率分别 [9] ZHAO Y (赵岩), TANG G S (唐国胜), HOU Y Y (侯莹莹), et al.
Research on synthesis technology of phytosterol esters[J]. Journal of
为 99.5%、99.5%和 99.1%,而菜籽甾醇的转化率为 Food Safety and Quality (食品安全质量检测学报), 2015, 6(2):
585-590.
80.9%。本文所使用的木质甾醇包含的各种甾醇与现 [10] ME T T (么婷婷), XIN J Y (辛嘉英), WANG Y (王艳), et al.
有文献报道中脱臭馏出物来源的植物甾醇含量差别 Synthesis of phytosterol esters catalyzed by lipase[J]. Chemical
Engineer (化学工程师), 2016, 30(9): 4-9.
较大,且催化活性存在差异,其中 β-谷甾醇、豆甾 [11] JIANG S T (姜绍通),ZHENG H J (郑海杰),PANG M (庞敏).
Lipase-catalyzed synthesis and characterization of phytosterol
醇优先转化,转化率分别为 99.7%和 99.6%,而菜 esters[J]. Journal of Food Science (食品科学), 2012, 33(6): 78-82.
油甾醇和菜籽甾醇的转化率分别为 82.3%和 83.4%。 [12] CUI C X, GUAN N, XING C, et al. Immobilization of Yarrowia
lipolytica lipase Ylip2 for the biocatalytic synthesis of phytosterol
与之前文献报道的诸多酶法合成植物甾醇酯方法相 ester in a water activity controlled reactor[J]. Colloids and Surfaces
B: Biointerfaces, 2016, 146: 490-497.
比较 [10-13] ,采用本文的优化合成工艺可以在较少催 [13] CHOI N, CHO H J, KIM H, et al. Preparation of phytosteryl ester
化剂、较短时间内得到更高的转化率。 and simultaneous enrichment of stearidonic acid via lipase-catalyzed
esterification[J]. Process Biochemistry, 2017, 61: 88-94.
[14] HE B Q, DENG T, LI J X, et al. An innovative auto-catalytic
3 结论 esterification for the production of phytosterol esters: Experiment
and kinetics[J]. RSC Advances, 2014, 4(119): 64319-64327.
[15] YANG F M (杨福明), MA Y (马莺). Simultaneous determination of
在所考察的 10 种常见商品化脂肪酶中,CRL phytosterols and phytosterols by HPLC[J]. Journal of Food Science
催化木质甾醇油酸酯合成的性能最好,正己烷是优 (中国粮油学报), 2017, 32(6): 134-138, 145.
[16] YU D Y, WANG T, CHEN J, et al. Enzymatic esterification of rice
选的反应介质。在单因素实验的基础上,通过响应 bran oil and phytosterol in supercritical CO 2[J]. Journal of Food
Processing and Preservation, 2019, 43(9):14066.
面实验设计对合成工艺进行了优化,建立了拟合性 [17] HUO Z Y (霍振宇), REN M X (任明星), JIA C S (贾承胜), et al.
良好的回归模型方程,得到了一个二阶模型来预测 Sythesis of galloyl phytosterol esters[J]. CHINA Oils and Fats (中国
油脂), 2016, 41(2): 65-69.
转化率与酶添加量、底物物质的量比、反应温度和 [18] ZHANG X Y, YU J, ZENG A W. Optimization and modeling for the
synthesis of sterol esters from deodorizer distillate by lipase-
反应时间的关系。该模型模拟出 CRL 催化合成木质 catalyzed esterification[J]. Biotechnology and Applied Biochemistry,
甾醇油酸酯的优化工艺条件,实验证实了模型预测 2017, 64(2): 270-278.
[19] CHEN K, ARNOLD F H. Engineering new catalytic activities in
工艺的精准性。经过修正得到的脂肪酶催化合成木 enzymes[J]. Nature Catalysis, 2020, 3(3): 203-213.
[20] SANCHEZ M J M, HAMON V, THOMAS D, et al. Modulation of
质甾醇油酸酯的最优工艺参数为:酶添加量为木质 lipase hydrolysis and synthesis reactions using carbohydrates[J].
甾醇质量的 10%,油酸与木质甾醇的物质的量比为 Biochimica et Biophysica Acta, 1991, 1078(3): 345-350.
[21] YU M (于敏), JIANG Z H (蒋振华), REN L W (任立伟), et al.
3.8∶1,反应温度为 46 ℃,反应时间为 28 h,转化 Study on preparation of phytosterol esters[J]. Food and Drug (食品
率为 91.56%±0.25%。论文研究内容可为木质甾醇酯 与药品), 2014, 16(1): 1-5.
[22] SHANG C Y, LI W X, ZHANG R F. Immobilization of Candida
的绿色、高效合成提供有价值的参考。 rugosa lipase on ZnO nanowires/macroporous silica composites for
biocatalytic synthesis of phytosterol esters[J]. Materials Research
Bulletin, 2015, 68: 336-342.
参考文献
[23] CHANG M, ZHANG T, FENG W H, et al. Preparation of highly
[1] REAVER A, HEWLINGS S, WESTERMAN K, et al. A randomized, pure stigmasteryl oleate by enzymatic esterification of stigmasterol
placebo-controlled, double-blind crossover study to assess a unique enriched from soybean phytosterols[J]. LWT—Food Science and
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