Improving the color stability and antioxidation activity of blueberry anthocyanins by enzymatic acylation with p-coumaric acid and caffeic acid

Ultrahigh Pressure Facilitates the Acylation of Malvidin and Chlorogenic Acid to Increase the Stability and Protective Effect of Malvidin Derivatives on H2O2-Induced ARPE-19 Cells

“…FTIR spectroscopy was conducted to analyze the groups of MV derivatives (Figure C). According to Molaeafard et al and Liu et al, the strong and broad absorption band at around 3431.20878 cm –1 was attributed to the stretching vibration of −OH, which may be the phenolic hydroxyl group and hydrogen bond of MV. Compared with MV, MV derivatives exhibited a new and smaller absorption peak within the range of 3000–2000 cm –1 , possibly because of methyl (C–H) stretching vibration absorption.…”

“…Therefore, Mv3ACEC and MV likely have similar effects on ARPE-19 cells. Furthermore, several studies showed that acylated anthocyanins have a higher DPPH clearance and cell membrane affinity. − Our results showed that the functional activity of Mv3ACEC was similar to that of MV. This may be related to the higher number of phenolic hydroxyl groups in Mv3ACEC or the structural changes that affect its affinity to the cell membrane.…”

“…The method used to determine the crystal structure of MV derivatives was similar to that described by Liu et al . with a Rigaku Ultima IV X-ray diffractometer (XRD, Rigaku, D/max2500, Japan), Using the Cu K target at 40 kV and 50 mA; the diffraction angle ranged from 60 to 5°.…”

A promising blueberry from Colombia: antioxidant activity, nutritional and phytochemical composition of Cavendishia nitida (Kunth) A.C.Sm.

“…Among berries, those belonging to the Ericaceae family contain the highest amount of antioxidants, mainly composed of anthocyanins, which give the ripe fruits their color. For example, the glycosides of cyanidin, delphinidin, and pelargonidin provide the red, blue, and purple colors, respectively, of fresh blueberries ( Liu et al., 2020 ; Rashidinejad, 2020 ). Berries of the genus Cavendishia contain monoglycosides of delphinidin, cyanidin, petunidin, peonidin, and malvidin ( Ma et al., 2013 ), while in C. nitida berries, no malvidin glycosides were detected.…”

Investigation of a Lipase-Catalyzed Reaction between Pectin and Salicylic Acid and Its Isomers and Evaluation of the Emulsifying Properties, Antioxidant Activities, and Antibacterial Activities of the Corresponding Products

“…Some studies have shown that lipase can hydrolyze fat in the aqueous phase but catalyze ester formation in the organic phase. 25 However, pectin is a water-soluble polysaccharide and phenolic acid is a fat-soluble polyphenol. It is difficult for lipase to catalyze esterification between the two in both the organic phase and the aqueous phase.…”