沙棘原浆树脂降酸工艺的研究

Research on acid reduction process of Sea buckthorn puree by resin

    摘要
  • 摘要:
    目的 研究不同阴离子交换树脂和流速对沙棘原浆降酸效果、营养物质与口感的影响。
    方法 通过离心处理沙棘原浆使果肉与清汁分离，清汁经优选树脂降酸至目标酸度，再与果肉相交配，达到合理降酸目的，同时又使口感营养保持最佳。
    结果 D318离子交换树脂最适宜于沙棘清汁的降酸，其脱酸率可达45%，其对维生素C及可溶性固形物的影响较小；D202与XAD7HP树脂对总酸吸附能力最弱，且无显著性差异。流速对D318树脂的动力学曲线有很大影响，40 BV/h比20 BV/h速度达到漏出点时其处理量降低了1/2。调配后的沙棘果浆总酸比原浆降低了约1/2。
    结论 7种离子交换树脂对沙棘清汁中总酸和维生素C及可溶性固形物均有不同程度吸附作用，其中D318离子交换树脂吸附沙棘清汁中酸的能力最佳，脱酸率达45%；综合考虑生产效率和营养物质保留率，以20 BV/h为最优吸附流速，调配后的沙棘果浆口感协调。

     

    Abstract:
    Objective To investigate the effects of different anion exchange resins and flow rates on deacidification efficiency, nutrient retention, and sensory quality of sea buckthorn puree.
    Methods The puree was separated into pulp and clear juice by centrifugation; the clear juice was deacidified by the optimal resin and then remixed with the pulp.
    Results D318 resin was the most suitable, with a deacidification rate of 45%, and had minor effects on vitamin C and soluble solids. D202 and XAD7HP showed the weakest adsorption capacity for total acids. The processing capacity at 40 BV/h was reduced by half compared with 20 BV/h. The total acid content of the formulated puree was reduced by about half.
    Conclusion D318 resin showed the best adsorption capacity for acids, with a deacidification rate of 45%. The optimal flow rate was 20 BV/h, and the formulated puree had harmonious taste.

     

    • HTML全文
    • 参考文献(22)
    • 相关文章
    • 施引文献
  • 资源附件(0)

/

返回文章
返回