Carotenoid content of Goji berries: CIELAB, HPLC-DAD analyses and quantitative correlation. (1st December 2018)

• Record Type: Journal Article
• Authors: Patsilinakos, Alexandros; Ragno, Rino; Carradori, Simone; Petralito, Stefania; Cesa, Stefania
• Is Part Of: Food chemistry. Volume 268(2018)
• Page Start: 49
• Page End: 56
• Publication Date: 2018-12-01
• Subjects: Goji berry -- Lycium barbarum -- Zeaxanthin dipalmitate -- Carotenoids -- CIELAB -- HPLC-DAD -- Machine learning; Food -- Analysis -- Periodicals; Food -- Composition -- Periodicals; 664
• DOI: 10.1016/j.foodchem.2018.06.013
• Languages: English
• ISSNs: 0308-8146

Abstract

Highlights: Goji fruits were homogenized and carotenoid component was one-step selectively extracted. HPLC-DAD quantitative analysis of zeaxanthin dipalmitate and carotenoids was performed. Tristimulus colorimetric CIELAB analyses were applied to Goji berries homogenates. HPLC-DAD data and colorimetric CIELAB parameters were evaluated and correlated. Abstract: Fruits of Lycium barbarum L. have been used in Chinese traditional medicine for centuries. In the last decade, there has been much interest in the potential health benefits of many biologically constituents of these fruits. The high level of carotenoids offers protection against development of cardiovascular diseases, diabetes and related comorbidities. In the present work two different selections of Lycium barbarum L., cultivated in Italy and coming from three discrete harvest stages, were subjected to two different grinding procedure and to a simplified extraction method of carotenoid component. CIELAB colorimetric analysis of the freshly prepared purees and HPLC-DAD analysis of carotenoid extracts were performed and compared. Different harvesting dates and grinding procedures deeply influence the carotenoids content and statistical analysis showed high correlation between carotenoid content and colorimetric data. The final model provides a reliable tool to directly assess carotenoid content by performing cheap and routinely colorimetric analyses for food industry.