The present study aimed to prepare blue colored powders from an aqueous extract of cornflower petals. Low temperature (4 °C) aqueous extraction (1:20) and microencapsulation by freeze-drying were performed. A mixture of stabilizers (maltodextrin, guar gum, and lecithin) in a proportion of 10% to the amount of extract was used. The results indicated that the addition of 2% and 4% guar gum to maltodextrin (8-6%) significantly increased the efficiency of the process, but 4% guar gum caused the formation of amorphous particles; therefore, 2% guar gum addition was found to be the most optimal. The FT-IR and FT-Raman band characteristics for guar gum, lecithin, and maltodextrin dominated over those for anthocyanins contained in the powders made from cornflower petals. The blue powders had total phenolic content of 19.5-26.6 mg GAE/g DW. The antioxidant activity of the prepared powders measured by ABTS, CHEL, OH, and RED was high.
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http://dx.doi.org/10.1016/j.foodchem.2020.128889 | DOI Listing |
Naunyn Schmiedebergs Arch Pharmacol
December 2024
Department of Bio & Nano Technology, Guru Jambheshwar University of Science & Technology, Hisar, 125001, Haryana, India.
Berberine is a promising bioactive compound that has gained great attention against numerous diseases but its low solubility and poor systemic bioavailability hinders its clinical applicability. Therefore, this study attempted to enhance the therapeutic potential of berberine by its nanoencapsulation. Berberine loaded guar-acacia gum nanocomplexes (Ber/Gu-AGNCs) were prepared by ionic complexation method; characterized and evaluated for anti-obesity activity in high fat diet (HFD) induced obese rats.
View Article and Find Full Text PDFThe vital role of naturally occurring dietary fibers (DFs) in maintaining intestinal health has fueled the incorporation of isolated DFs into processed foods. A select group of soluble DFs, such as partially hydrolyzed guar gum (Phgg), are being promoted as dietary supplements to meet recommended DF intake. However, the potential effects of regular consumption of these processed DFs on gastrointestinal health remain largely unknown.
View Article and Find Full Text PDFInt J Biol Macromol
December 2024
Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals, Key Laboratory of Green Chemical Media and Reactions, Ministry of Education, Henan Engineering Research Centre of Chiral Hydroxyl Pharmaceutical, School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang 453007, China. Electronic address:
Hydrogels are promising wound dressings due to their extracellular matrix-like properties and tunable structure-function characteristics. Besides the physical isolation effect, hydrogel dressings are highly expected to possess tissue-adhesive performance and antibacterial capacity, which are beneficial for their clinical translations. Herein, a guar gum (GG)-based nanocomposite hydrogel was fabricated by mixing methacrylated GG (GGMA), acrylic acid, acrylated 3-aminophenylboronic acid, mangiferin (MF)-loaded cetyltrimethyl ammonium chloride (CTAC) micelles (MF@CTAC) and radical initiator.
View Article and Find Full Text PDFACS Biomater Sci Eng
December 2024
College of Chemistry & Chemical Engineering, Yangzhou University, Yangzhou, Jiangsu 225002, China.
Accurate acetaminophen (APAP) determination using smartphone-based portable sensing hinges on developing sensing interfaces with effective catalytic performance and high electron transfer efficiency. Herein, we report that various Ni-based bimetallic-organic framework materials (MOFs) were synthesized through the hydrothermal method. These MOFs were incorporated with multiwalled carbon nanotubes (MWCNTs) during the synthesis of chitosan-cationic guar gum hydrogels (HG).
View Article and Find Full Text PDFACS Nano
December 2024
State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Chemistry and Chemical Engineering, Donghua University, Shanghai 201620, China.
Flexible Zn-air batteries (FZABs) hold significant promise in diverse application scenarios with high safety and compatibility yet are still impeded by byproduct formation and poor water retention. Here, the neutral hydrogel electrolyte GAHE is engineered by polymerizing acrylamide (AM) in a solution composed of cationic guar gum (CGG) and acetate salts to conquer the above challenges. The acetate anions (OAc) exert a pH near 7 to effectively inhibit the side reactions triggered by H.
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