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[The quality specification of grape seed extract]
Yun-Dong Shao1, Wen-Yuan Gao, Yan-Fang Su
1Tianjin Jianfeng Natural Product Co., Ltd., Tianjin 300402, China.
Summary
Quality control for grape seed extract is lacking. This study proposes two new quality specifications for grape seed extract, one for high-purity products and one for ordinary quality, to improve market standards.
Area of Science:
- Phytochemistry
- Analytical Chemistry
- Quality Control
Context:
- The global market for grape seed extract (GSE) lacks standardized quality control measures.
- Existing quality control for GSE is inconsistent across domestic and international markets.
- There are no established national or industrial technical specifications for GSE products.
Purpose:
- To review the current state of GSE quality control.
- To propose standardized quality specifications for GSE.
- To differentiate between high-purity and ordinary quality GSE standards.
Summary:
- This review highlights the absence of unified quality control for grape seed extract.
- Two distinct quality specifications are proposed: one for high-purity GSE (polyphenols ≥95%, monomers ≥10%) and another for ordinary quality GSE (procyanidolic value ≥95, monomers ≥6%).
- These proposed standards aim to address the current lack of technical specifications in the GSE market.
Impact:
- Establishment of clear quality benchmarks for grape seed extract production and trade.
- Improved consumer confidence and product consistency in the GSE market.
- Foundation for future development of national and international standards for botanical extracts.