| 陈展炎1，徐思佳1，周星宇1，黄伊欣1，管业圣2，郝泽金2，邱昌杨1，周凯1,2.油茶果壳低聚木糖的制备工艺研究[J].中国油脂,2026,51(8):.[CHEN Zhanyan1, XU Sijia1, ZHOU Xingyu1, HUANG Yixin1, GUAN Yesheng2,
HAO Zejin2, QIU Changyang1, ZHOU Kai1,2.Preparation process of xylo-oligosaccharides from Camellia oleifera shell and hull[J].China Oils and Fats,2026,51(8):.] |
| 油茶果壳低聚木糖的制备工艺研究 |
| Preparation process of xylo-oligosaccharides from Camellia oleifera shell and hull |
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投稿时间：2025-12-06 修订日期：2026-06-23 录用日期：2026-01-07
出版日期：
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| DOI：10.19902/j.cnki.zgyz.1003-7969.250516 |
| 中文关键词: 油茶果壳 低聚木糖 蒸汽闪爆 酶解 |
| 英文关键词:Camellia oleifera shell and hull xylo-oligosaccharides steam explosion enzymatic hydrolysis |
| 基金项目:江西省林业局油茶专项（YCYJZX〔2023〕333号）；九江市创新人才项目（2025_000091） |
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| Author Name | Affiliation | | CHEN Zhanyan1, XU Sijia1, ZHOU Xingyu1, HUANG Yixin1, GUAN Yesheng2,
HAO Zejin2, QIU Changyang1, ZHOU Kai1,2 | 1.School of Pharmacy and Life Sciences, Jiangxi Camellia oleifera Research Center, Jiujiang Key Laboratory of
Food Processing and Safety, Jiujiang University, Jiujiang 332000, Jiangxi, China
2.Jiangxi Shenzhoutong
Youcha Technology Co. , Ltd. , Jiujiang 332801, Jiangxi, China |
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| 中文摘要: |
| 旨在为油茶果壳（油茶蒲和油茶壳）的高值化利用提供参考，通过半纤维素含量比较了油茶壳与油茶蒲的差异，并采用原料破碎—水预浸处理—蒸汽闪爆处理—酶解—膜分离—活性炭脱色和离子交换树脂脱盐—浓缩的工艺制备低聚木糖（XOS），对上述关键工艺步骤进行了系统优化，并对产品关键指标进行了检测。结果表明：油茶壳和油茶蒲的半纤维素含量分别为26.92%和2410%，具备开发潜力；蒸汽闪爆处理中，油茶蒲的平均聚合度低于油茶壳，更适合作XOS提取原料，其较优工艺条件为蒸汽闪爆压力1.5 MPa、保压时间3 min；优选真菌来源木聚糖酶ZJ-5，于pH 6.0、60 ℃酶解6 h，XOS提取率较未酶解组提升288.16%；采用微滤-超滤-纳滤的三级膜分离工艺，每个阶段XOS截留率均超过75%，总XOS得率为51.81%，同时将料液浓缩至初始（酶解液）质量的近10%；对纳滤截留液采用20%活性炭单次脱色、D001与D293树脂串联脱盐效果最优；按优化工艺制得的XOS-70型糖浆产品中，XOS含量为70.7%，其中木二糖~木四糖含量为602%，占XOS总量的85%以上，透光率达96.8%，灰分仅0.01%，各项指标均符合国家标准要求。综上，采用蒸汽闪爆技术从油茶果蒲中制备高纯度XOS的工艺可行，具备良好的产业化潜力。 |
| 英文摘要: |
| To provide a reference for the high-value utilization of Camellia oleifera shell and hull, the hemicellulose contents of the Camellia oleifera shell and hull were determined and compared. Xylo-oligosaccharides (XOS) were prepared through a process comprising raw material crushing, water presoaking, steam explosion treatment, enzymatic hydrolysis, membrane separation, activated carbon decolorization, ion-exchange resin desalting, and concentration. The key process steps were systematically optimized, and the main product indices were tested. The results showed that the hemicellulose contents of the Camellia oleifera shell and hull were 26.92% and 24.10%, respectively, indicating good development potential. During steam explosion, the average degree of polymerization of the hull was lower than that of the shell, making it more suitable as a raw material for XOS extraction. The optimal conditions for steam explosion were a pressure of 1.5 MPa and a holding time of 3 min for the hull. The preferred xylanase was a fungal derived enzyme (ZJ-5), and the optimal enzymatic hydrolysis was performed at pH 6.0 and 60 ℃ for 6 h, which increased the XOS yield by 288.16% compared with the nonenzymatic group. A three-stage membrane separation process (microfiltration, ultrafiltration, and nanofiltration) was adopted, with an XOS retention rate exceeding 75% at each stage, a total XOS yield of 51.81%, and a concentration of the feed liquid to approximately 10% of its initial mass (that of the enzymatic hydrolysate). For the nanofiltration retentate, the best decolorization and desalting effects were achieved by single-pass decolorization with 20% activated carbon followed by tandem D001 and D293 ion-exchange resins. The XOS type 70-syrup produced under the optimized process had an XOS content of 70.7%, of which xylobiose to xylotetraose accounted for 60.2% (over 85% of total XOS). The syrup exhibited a transmittance of 96.8% and an ash content of only 0.01%, all of which met the national standard requirements. In conclusion, the proposed steam explosion based process for producing high-purity XOS from Camellia oleifera hull is technically feasible and shows good potential for industrial application. |
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