Method for producing clear, concentrated sweet potato juice

US9204662B2 · kind B2 · utility

Assignees

• SDIC ZHONGLU FRUIT JUICE CO., LTD. · CN
• Xihong Li · CN

Inventors

• Sixin Wang · Changsha, CN
• Chuanzhu Leng · Tianjin, CN
• Xihong Li · Beijing, CN
• Haitao Ye · Tianjin, CN
• Yajun Sun · Tianjin, CN
• Yage Xing · Tianjin, CN
• Weili Li · Beijing, CN
• Ting Xue · Tianjin, CN
• Haidong Liu · Tianjin, CN
• Chongxiao Shao · Beijing, CN
• Weiqi Yang · Tianjin, CN
• Jing Jin · Beijing, CN

Key dates

• Filing date: Jun 12, 2012
• Grant date: Dec 8, 2015
• Expiry date: Oct 24, 2033

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A23L33/22
• WIPO field: Food chemistry
• WIPO sector: Chemistry

Abstract

A method for producing clear, concentrated sweet potato juice, including: a) cleaning, peeling, crushing, and gelatinizing a raw material of sweet potatoes to yield a sweet potato paste, and squeezing the sweet potato paste to obtain skin dregs and a squeezed clear juice; b) performing enzymolysis to part of the skin dregs and adding the hydrolyzed skin dregs to the sweet potato paste for squeezing; c) performing enzymolysis and filtering to the squeezed clear juice to obtain a sweet potato clear juice; d) combining the rest part of the skin dregs and sweet potato skins generated during the peeling process to obtain a sweet potato residue; e) extracting dietary fiber from the sweet potato residue; and f) adding the dietary fiber to the sweet potato clear juice and post-treating the sweet potato clear juice.