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Ultrasound-Assisted Extraction of High Value Compounds from Agro-Industrial Byproducts
Published in Anil Kumar Anal, Parmjit S. Panesar, Valorization of Agro-Industrial Byproducts, 2023
Anuradha Saini, Divyani Panwar, Parmjit S. Panesar, Anjineyulu Kothakota
The UAE technique was used for the extraction of natural antioxidants from mung bean seed coats and produced an antioxidant capacity higher than conventional methods. The antioxidant compounds, which included vitexin, p-coumaric acid, isovitexin, gallic acid, catechin, and rutin, were identified in the seed coat extract (Zhou et al., 2017). TPC and Total flavonoids content (TFC)have been found in higher concentrations in the hull compared to the whole mung bean and cotyledon. Moreover, UAE extracts a higher content of total polyphenols along with total flavonoids than conventional solvent extraction using acetone (Singh et al., 2017). The recovery of polyphenols from the red sword bean (Canavalia gladiata (Jacq.) DC.) seed coat has indicated that the recovered extract's antioxidant activity using UAE was greater than maceration and Soxhlet extraction. Compounds like digallic acid, trigalloyl hexoside, gallic acid, methyl gallate, and digalloyl hexoside were also found in the red sword bean seed coat extract (Zhou et al., 2019).
Flavonoids from Quercus Genus: Applications in Melasma and Psoriasis
Published in Tatjana Stevanovic, Chemistry of Lignocellulosics: Current Trends, 2018
Esquivel-García Roberto, Velázquez-Hernández María-Elena, Valentín-Escalera Josué, Valencia-Avilés Eréndira, Rodríguez-Orozco Alain-Raimundo, Martha-Estrella García-Pérez
Oak acorns are a rich source of carbohydrates, amino acids, proteins, lipids and various sterols (Rakić et al. 2007). Several scientific studies have demonstrated a high concentration of phenolic compounds and flavonoids in various oak species (Tejerina et al. 2011). Gallic acid, digallic acid and gallotannins were identified in the ethyl-acetate fraction of Q. acutissima Carruth. while the methanol extracts of acorns of Q. ilex L., Q. rotundifolia Lam., and Q. suber L. contain hydrolysable tannins (Cantos et al. 2003, Custódio et al. 2015, Rakić et al. 2007). Caffeic acid, gallic acid, (+)-catechin, theophylline, gallotannins, ellagitannins, condensed tannins and catechol were found in acorns of Q. suber (Tejerina et al. 2011).
Antioxidant, cytotoxicity, anti-human esophageal squamous cell carcinoma, anti-human Caucasian esophageal carcinoma, anti-adenocarcinoma of the gastroesophageal junction, and anti-distal esophageal adenocarcinoma properties of gold nanoparticles green synthesized by Rhus coriaria L. fruit aqueous extract
Published in Journal of Experimental Nanoscience, 2020
Jin Liu, Akram Zangeneh, Mohammad Mahdi Zangeneh, Baohu Guo
The requirement of traditional medicine for healthcare is enhanced day by day. One of the well-known traditional medicine in all of the world is Iranian traditional medicine. In Iranian traditional medicine, many sub-traditional medicines are there that the most well-known is Kurdish traditional medicine in the west of Iran. Every year many medicinal supplements and drugs are formulated and produced from the plants of Kurdish traditional medicine [11]. One of these plants is Rhus coriaria L. (Sumac). In traditional medicine, R. coriaria is used for its antibacterial, antifungal, antiviral, anti-parasitic, antioxidant, anti-inflammatory, nephroprotective, hepatoprotective, hematoprotective, hypolipidemic, hypoglycemic, immunoprotective, gastroprotective, DNA-protective, anticancer, and antimigratory activities [18]. It has chemical antioxidant components including dimeric flavonoids amenthoflavone, sumaflavone, hinokiflavone, flavonols quercetin, agathisflavone, kaempferol, myricetin, ellagic acid, methyl gallate, gallic acid, m-digallic acid, β-caryophyllene alcohol, aliphatic aldehydes, α-pinene, farnesyl acetone, cembrene, hexahydrofarnesylacetone, carvacrol, and α-terpineol. Probably, the remedial properties of this species are related to the above compounds [18].
Soy-based, tannin-modified plywood adhesives
Published in The Journal of Adhesion, 2018
Saman Ghahri, Antonio Pizzi, Behbood Mohebby, Ahmad Mirshokraie, Hamid Reza Mansouri
The main components found in the chestnut tannin extract used coincided with what was obtained by previous work by matrix-assisted laser desorption ionization time of flight (MALDI-TOF) analysis [15–17]. Gallic acid, glucose, catechin, ellagic acid, digallic acid, castalagin, and pentagalloyl glucose (that has the same MW of castalagin) are the main constituents of commercial chestnut tannin extract. Table 1 shows the main compounds present in the chestnut and mimosa tannin extracts used in this research work. The main amino acids present in soy protein as well as the results of the MALDITOF are listed in Table 2.