A comparison study between ultrasound–assisted and enzyme–assisted extraction of anthocyanins from blackcurrant (Ribes nigrum L.)

Ginger (Zingiber officinale) extract mediated green synthesis of silver nanoparticles and evaluation of their antioxidant activity and potential catalytic reduction activities with Direct Blue 15 or Direct Orange 26

“…Three milliliters of DO26 or DB15 (50 mg/L) were mixed with 0.1 mL NaBH 4 (0.1 mol/L) and 0.1 mL Z. officinale root extract or synthesized Z. officinale AgNPs. The performance was monitored by recording UV-vis spectra variation over time (0, 3,6,9,12,15,18,21,24,27,30,40,50, and 60 min). The control was also conducted without extract or AgNPs.…”

“…Ultrasound-assisted extraction uses the cavity effect and mechanical effect generated by ultrasonic waves to promote the movement of medium molecules, improve their movement speed and increase the penetration of the medium to promote the extraction of active components in the organism. In addition, it has the advantages of short time, high yield and low yield of by-products [ 29 , 30 ]. However, AgNPs prepared from different parts of ginger root water or ethanol extract by ultrasound synthesis and their antioxidant activity and whether the biogenic could be used to catalyze the reduction of hazardous dye are unknown.…”

Acylating blueberry anthocyanins with fatty acids: Improvement of their lipid solubility and antioxidant activities

“…So far, more than 600 anthocyanins have been isolated and identified from nature, mainly derived from 6 anthocyanidins, namely, cyanidin (Cy), delphinidin (De), pelargonidin (Pg), peonidin (Pn), petunidin (Pt) and malvidin (Ma), which account for more than 95 % of all anthocyanins ( Fei et al, 2021 , Zhao et al, 2017 ). In addition to making leaves, flowers, stems and fruits appear colorful, anthocyanins, with unpaired electrons, are hydrogen donors and can effectively eliminate a variety of reactive oxygen radicals ( José Aliaño González, 2022 , Stoica et al, 2022 , Zeng et al, 2019 ). A large number of studies have shown that anthocyanins have a wide range of pharmacological effects, such as promoting retinoid regeneration, anti-inflammatory, enhancing immunity, antioxidant, anti-aging, anti-tumor and other physiological activities ( Grobelna et al, 2019a , Grobelna et al, 2019b , He and Giusti, 2010 , Kalisz and Kieliszek, 2021 , Kalisz et al, 2020 ).…”

“…However, anthocyanins have high hydrophilicity due to their rich phenolic hydroxyl, which limits their application in fatty foods. On the other hand, poor lipid solubility also makes it difficult for anthocyanins to exert their antioxidant and related biological activities in fatty foods and even organisms ( José Aliaño González et al, 2022 ). An effective way to improve their lipid solubility is introducing lipophilic groups into anthocyanins.…”

Optimization of enzyme‐assisted extraction of albedo extract obtained from watermelon rind (Citrullus lanatus) and its use in the enrichment of nutrients and bioactive compounds in watermelon juices

“…The enzyme-assisted extraction (EAE) is an efficient technique for bioactive compound recovery in foods, and it is considered an eco-friendly extraction technology, with lower investment costs and energy requirements than conventional extractions methods. 8 Thus, EAE can be an effective and advisable technique for the extraction of phytochemicals for use in food formulation. As far as we know, there are few reports that the EAE method has been applied to obtain a high yield of albedo extract rich in polysaccharides and bioactive compounds, moreover, the use of this material in the enrichment of watermelon juices is not reported so far.…”