Prediction of total phenolics, anthocyanins and antioxidant capacity of blackberry (Rubus sp.), blueberry (Vaccinium sp.) and jaboticaba (Plinia cauliflora (Mart.) Kausel) skin using colorimetric parameters

Abstract

The food industry should have methods that allow identifying bioactive compounds quickly, efficiently and at low cost. The objective of this research was to obtain mathematical models for predicting the amount of total phenolics, anthocyanins and antioxidant capacity of blackberry, blueberry and jaboticaba skin, based on colorimetric parameters (L*, a*, b*, C* and h*). All analyses were done in the phenolic extracts obtained from these fruits. The mathematical models were obtained through multiple linear regression using the stepwise method. The significant correlation between the colorimetric parameters and chemical analyses resulted in models with a high predictive ability (high r 2), such as in the determination of the contents of anthocyanins (r 2 = 0.99), total phenolics (r 2 = 0.86) and for the antioxidant capacity (r 2 = 0.99). Thus, the prediction of levels of these bioactives compound, using colorimetric parameters, is very promising for cost and time savings.

Highbush Blueberry (Vaccinium corymbosum L.) Leaves Extract and Its Modified Arginine Preparation for the Management of Metabolic Syndrome—Chemical Analysis and Bioactivity in Rat Model

“…Both extracts showed lower total phenolics amount than similar preparations obtained previously from fruits of different Vaccinium species [ 46 ]. However, measured contents are significantly higher than in the case of previously investigated extracts prepared from the skins of fruits from two berry species [ 47 ].…”

“…E2 had more pronounced normalizing effect as compared with the control group, seen as decrease of glucose and Ch-LDL levels, and improving of Ch-HDL. The results can be mediated by the complex effect of contained polyphenols, and the action of L-arginine, which is known to lower LDL levels, prevent LDL oxidation, and thus, expresses beneficial potential towards prevention of atherosclerosis [ 47 ].…”

Effect of light, food additives and heat on the stability of sorghum 3‐deoxyanthocyanins in model beverages

“…The antioxidant capacity by ABTS method was 13.45 ± 0.15 µmol TE/L and by DPPH it was 68.88 ± 0.16 µmol TE/L. These values are higher than those found in some fruits such as jambolan and blackberry (Sari et al ., 2012; Rigolon et al ., 2020). This confirms that sorghum is a good source of anthocyanins and phenolic compounds.…”

Bibliometric analysis of blueberry (Vaccinium corymbosum L.) research publications based on Web of Science

“…and jaboticaba (Plinia cauliflora (Mart.) Kausel) skin using colorimetric parameters, is very promising for cost and time savings (Rigolon et al, 2020).…”