Jabuticaba (Plinia sp.) Peel as a Source of Pectin: Characterization and Effect of Different Extraction Methods

Abstract

The peel of jabuticaba, a small fruit native to Brazil, has been shown to be a potential source of antioxidants and soluble dietary fibers. In this study, flours prepared from these peels were evaluated as a source of pectin. Different extraction methods were employed: ultrasound (US) extraction followed by low temperature heating (40 °C); in a microwave (MW) without (method 1) or with cellulase (method 2) or hemicellulase (method 3); or in a water bath (method 4). Pectin yields ranged from approximately 18% for methods 1 and 4 up to 22% for enzyme-assisted extractions (methods 2 and 3). Methods that did not employ enzymes resulted in low amounts of methoxyl pectins, as opposed to high amounts of methoxyl pectins obtained after enzyme treatment. Cyanidin-3-O-glucoside (C3G) and ellagic acid were the main phenolic compounds found in jabuticaba peel pectins, with higher C3G levels obtained with enzyme-free extraction (methods 1 and 4). All pectins from jabuticaba peel presented a reddish tone, good emulsifying properties and high swelling capacity. The pectin extracted using US+MW+cellulase (method 2) presented better emulsifying performance (higher values of emulsifying activity and emulsion stability), more effective than commercially available citrus pectin.

Polyphenols in Jabuticaba (Plinia spp.) Peel Flours: Extraction and Comparative Evaluation of FTIR and HPLC for Quantification of Individual Compounds

“…Delphinidin-3- O -glucoside (D3G) was also identified ( Figure 2 A). These same compounds were also found in pectin extracted from jabuticaba peel flour [ 20 ]. Other compounds were separated during the chromatographic run, but could not be identified due to the absence of standard compounds.…”

Response Surface Optimization of Polysaccharides from Jaboticaba (Myrciaria cauliflora [Mart.] O.Berg) Fruits: Ultrasound‐Assisted Extraction, Structure Properties, and Antioxidant/Hypoglycemic Activities

“…[19] It was reported that the polysaccharides from jaboticaba fruit exhibit antitumor, anti-oxidant, and hypoglycemic activities. [20,21] However, current studies focused on the polysaccharides from jaboticaba fruit are mainly extracted by hot water extraction, few reports concerning on the polysaccharides extracted by UAE, an extraction method known to obtain polysaccharides with special structure and higher biological activities. Thus, it is necessary to explore the structural features and biological activities of jaboticaba fruit polysaccharides obtained using UAE method.…”

“…Jaboticaba fruit polysaccharide (MCP) is one of the main active ingredients of jaboticaba fruit [19] . It was reported that the polysaccharides from jaboticaba fruit exhibit anti‐tumor, anti‐oxidant, and hypoglycemic activities [20,21] . However, current studies focused on the polysaccharides from jaboticaba fruit are mainly extracted by hot water extraction, few reports concerning on the polysaccharides extracted by UAE, an extraction method known to obtain polysaccharides with special structure and higher biological activities.…”