Effect of in vitro gastrointestinal digestion on the mineral content, phenolic compounds, and antioxidant capacity of commercial pulps of purple and white açaí (Euterpe oleracea Mart.)

Abstract

Mineral content, total phenolic compounds (TPC), and antioxidant capacity were determined in three samples of purple-ac ¸aı ´(coarse-PAC, medium-PAM, and fine-PAF), and one of white-ac ¸aı ´(coarse-WAC) and their respective bioaccessible fractions. TPC content differed in all samples, with PAC (583.79 mgAGE/100 g) having the highest content; however, PAM showed higher bioaccessibility (32.27%). PAC presented higher antioxidant capacity in the FRAP tests (74.34 lM FeSO 4 /g) and ABTS (55.05 lM Trolox/g). However, no differences were found in DPPH between PAC (1986.66 EC50) and PAM (2408.88 EC50) samples. Antioxidant capacity was decreased in all samples after digestion. Potassium was in the highest proportion (7121.90 mg/100 g-PAC), followed by Ca (349.92 mg/100 g-PAM), and Mg (169.41 mg/100 g-PAM), in all the samples. However, Ca presented the highest bioaccessible fraction, followed by Mg and Mn, with the highest percentages observed in WAC samples (90.30, 74.30, and 64.52%, respectively).

Comparison of Chemical Constituents and Pharmacological Effects of Different Varieties of Chrysanthemum Flos in China

“…Hangju‐Dayanghua (HJ‐DYH), Boju (BJ), Wuyuandahuangju (DHJ), and Wuyuanxiaohuangju (XHJ) had the strongest DPPH free radical scavenging abilities. In the ABTS assay, stable‐colored ABTS radicals interact with antioxidants, resulting in color loss [23] . In the present study, at a water extract concentration of 0.4 mg mL −1 , the clearance rates of all varieties except Xiaoboju (XBJ) were greater than 90 % ( Figure 1 B ).…”

“…[20.21] Antioxidants are considered the most important components of many natural products and traditional Chinese medicines [12,13] . DPPH, ABTS, and FRAP assays are often used simultaneously to evaluate the antioxidant activity of extracts or active substances in vitro [22,23] . In the present study, we evaluated the antioxidant activity of water extracts from 25 chrysanthemum varieties; the results are shown in Figure 1.…”

Ciência e Tecnologia dos Alimentos – Volume 14

“…É considerado um fruto de excelente valor nutricional, em decorrência do seu alto valor energético (elevado teor de lipídios e proteínas) e por apresentar uma boa composição de micronutrientes, dentre eles o potássio, cálcio, magnésio, manganês e ferro. Outrossim, há uma grande presença de compostos bioativos no açaí, principalmente de antocianinas (MINIGHIN et al, 2020b;MATTA et al, 2020).…”

Emerging source of bioactive compounds from Arecaceae family: a systematic review

“…Aqueous and ethanolic extract (Mpiana, Masunda, Longoma, Tshibangu, & Ngbolua, 2013) Mauritia flexuosa Antioxidant and antimicrobial Chloroform extract, ethyl acetate and ethanolic (Nonato et al, 2018) Phoenix dactylifera Hepatoprotection Methanolic extract (Okwuosa et al, 2014) Euterpe oleracea Antioxidant Aqueous extract (Minighin et al, 2019) Mauritia flexuosa Antimicrobial and antioxidante Fraction (Nonato et al, 2018) Orbignya speciosa Antinociceptive Fraction (Pinheiro, Boylan, & Fernandes, 2012) Raphia farinifera Cytotoxicity Fraction (Tapondjou, Siems, Bottger, & Melzing, 2015) Euterpe oleracea Anti-inflammatory and antinociceptive…”

“…Mauritia flexuosa showed antioxidant activity being able to reduce the ABTS radical and chelate 80.9% of Fe+2 in vitro, available at 700 µg/mL (Nonato et al, 2018). Other Arecaceae species that also showed antioxidant activity in vitro models are Euterpe Oleracia (Minighin et al, 2019), Hyophorbe indica (William et al, 2018), Cocos nucifera (Kadja et al, 2020;Thebo et al, 2016), and Ravena rivularis (Elgindi et al, 2015) Kassem (Kassem & Afifi, 2014) studied the lipophilic fraction obtained from Livistona australis fruit (LALF), which presented oleic acid as major content (59.05%), palmitic acid (20.59%), phytol-diterpene (7.98%) and linoleic acid (0.79%).…”