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Microbial Bioconversion of Agro-Waste Biomass into Useful Phenolic Compounds
Published in Prakash K. Sarangi, Latika Bhatia, Biotechnology for Waste Biomass Utilization, 2023
Bhabjit Pattnaik, Prakash Kumar Sarangi, Padan Kumar Jena, Hara Prasad Sahoo
The hydroxycinnamic acid has been described to exhibit a wide array of physiological features like anti-inflammatory, anti-cancer, therapeutic, hepatoprotective, anti-aging, anti-apoptotic, antimicrobial, anti-diabetic, anti-mutagenic, neuroprotective, photoprotective, etc., which can be mainly ascribed following its antioxidant property (Umre et al., 2018; Singh et al., 2016; Kumar and Pruthi, 2014; Zielinski et al., 2014; Fujita et al., 2013; Paiva et al., 2013; Kang et al., 2011; Dos Santos et al., 2008b, Lin et.al., 2010). Although the acid is accountable for the production of vital organic compounds like vanillic acid, vanillin, coniferyl alcohol, sinapic acid, curcumin, and ferulic acid, it primarily confers rigidity to plant cell walls. Apart from these applications, ferulic acid can also be utilized as a food preservative and display a range of pharmaceutical, biomedical and industrial applications (Kumar and Pruthi, 2014).
New Insights into Feruloyl Esterase
Published in Jitendra Kumar Saini, Surender Singh, Lata Nain, Sustainable Microbial Technologies for Valorization of Agro-Industrial Wastes, 2023
Natural antioxidants and flavoring agents such as ferulic acid and other hydroxycinnamic acids have widespread potential by virtue of their antioxidant property. The solubility of natural antioxidants in aqueous media is very low, which reduces usefulness in food processing (oil based), pharmaceutical, and cosmetic products (Antonopoulou, 2017; Faulds, 2010). Esterification or transesterification is a common alternative to enhance the solubility of natural oxidants. The synthesis of ester-linked hydroxycinnamic acid through transesterification reaction is done by interchanging the organic group of an ester (donor) with the organic group of alcohol (acceptor) (Dilokpimol et al., 2016). The first transesterification activity of feruloyl esterase enzyme was investigated from the Sporotrichum thermophile (StFaeC) by using arabinose and arabinobiose as acceptor (Topakas et al., 2005). Transesterification has several advantages over hydrolysis, such as enhancing the availability of acceptor molecules, which can differ from different carbohydrates, alcohols, and glycerol.
Phenolic Compounds potential health Benefits and toxicity
Published in Quan V. Vuong, Utilisation of Bioactive Compounds from Agricultural and Food Waste, 2017
Deep Jyoti Bhuyan, Amrita Basu
Phenolic acids are divided into two subgroups: hydroxybenzoic and hydroxycinnamic acids (Balasundram et al. 2006). Phenolic acids are significant components of fruit and vegetables. These compounds play an important role in color stability, aroma profile and antioxidant activity. They act as acids because of their carboxylic group (Fleuriet and Macheix 2003). Ellagic and gallic acids are two major dietary hydroxybenzoic acids in berries and nuts (Maas et al. 1991, King and Young 1999). Caffeic, ferulic, p-coumaric and sinapic acids are the most common hydroxycinnamic acids and aromatic in Nature (Bravo 1998, Balasundram et al. 2006). Chlorogenic acid is an important member of this group with regard to food material and is the key substrate for enzymatic browning of fruits, such as apples and pears (Eskin 1990, Ho 1992). Chlorogenic acid is commonly found in higher quantities in seeds, such as coffee beans, sunflower seeds and grains and is formed when caffeic acid is combined with quinic acid (Sondheimer 1958, King and Young 1999).
A broad assessment of Eremurus spectabilis M. Bieb: chemical and elemental composition, total phenolic and antimicrobial activity analysis, and quantum chemical calculations of radical scavenging potential
Published in International Journal of Environmental Health Research, 2023
İbrahim Tegin, Bülent Hallaç, Nazmiye Sabancı, Betül Sadik, Mehmet Fidan, Erdal Yabalak
Antioxidant activity, indicating electron/proton donating ability, is seen in different classes of compounds. Among the compounds with antioxidant properties, flavonoids are natural phenolic compounds commonly found in plants (Pietta 2000). They exhibit various pharmacological properties (Ullah et al. 2020) such as anticancer (Dajas 2012; Zhao et al. 2019), antimicrobial, antiviral and antiangiogenic (Zhao et al. 2018), antimalarial, antioxidant, neuroprotective, antitumor, and anti-proliferative activity (Patel et al. 2018). Phenolic acids, especially hydroxybenzoic and hydroxycinnamic acid derivatives, which are bioactive compounds found in natural sources, show antioxidant activity and different pharmacological properties (Leopoldini et al. 2011; Zeb 2020). Three different chemical mechanisms are known for the activity of antioxidant compounds: hydrogen atom transfer (HAT), single electron transfer followed by proton transfer (SET-PT), and sequential proton loss electron transfer (SPLET).
A sustainable preparative-scale chemo-enzymatic synthesis of 6-hydroxy-5,7-dimethoxy-2-naphthoic acid (DMNA) from sinapic acid
Published in Green Chemistry Letters and Reviews, 2022
Amandine L. Flourat, Nour Zeaiter, Erwan Vallée, V. P. Thinh Nguyen, Sami Fadlallah, Florent Allais
To achieve efficient and cost-competitive biorefineries, and thus operate the switch from petro- to bioeconomy, Manzanares highlighted the importance of combining the production of low-value/high-volume products (e.g. food, feed, bioenergy) with the production of high-value biobased chemicals (1). p-Hydroxycinnamic acids (p-HCA) represent one of the most widely distributed chemicals in the plant kingdom, along with other phenylpropanoids such as flavonoids, stilbenes, and lignans (1). Sinapic acid (SA) and its analogs are among the most important p-HCA present in Brassicaceae family (e.g. B. carinata, B. napus, B. juncea). They can be extracted and purified from agricultural residues (e.g. mustard, rapeseed press-cakes), (2–6) thus allowing the generation of new applications and additional value to farmers and/or food industries in accordance with the circular economy concept (1).
Metalliferous conditions induce regulation in antioxidant activities, polyphenolics and nutritional quality of Moringa oleifera L.
Published in International Journal of Phytoremediation, 2020
Wasif Nouman, Tehmeena Bashir, Rehman Gul, Tehseen Gull, Mark E. Olson, Mehak Shaheen, Eduardo Rosa, Raúl Domínguez-Perles, Wagdi Sabir Soliman
In the case of hydroxycinnamic acids, 5 compounds were identified as dicaffeoylquinic acid, 5-caffeoylquinic acid, 3-caffeoylquinic acid, 3-p-coumaroylquinic acid and feruloylquinic acid at m/z 515, 353, 353, 337, and 367, respectively. The first hydroxycinnamic acid was identified with fragments at m/z 353, 191, 179, 173, and 135, the second compound was with fragments at m/z 179, 173, and 135, the third compound with fragments at same m/z as of the second compound, the fourth compound was detected with fragments at m/z 191 and 179 while fifth hydroxycinnamic acid was identified with fragments at m/z 191, 173, 179, and 163 (Tables 8–10).