Recently I am researching about ASSISTED EXTRACTION; ANTIOXIDANT CAPACITY; CHEMICAL-COMPOSITION; ROSMARINIC ACID; ESSENTIAL OILS; BIOSYNTHESIS; QUALITY; PEPPER; YIELD, Saw an article supported by the Tunisian Ministry of Higher Education and Scientific Research [LR19INRAP02]. Recommanded Product: 103-26-4. Published in ELSEVIER in AMSTERDAM ,Authors: Mahmoudi, H; Marzouki, M; M’Rabet, Y; Mezni, M; Ouazzou, AA; Hosni, K. The CAS is 103-26-4. Through research, I have a further understanding and discovery of Methyl 3-phenyl-2-propenoate
In the present study, the effect of enzyme pretreatment on essential oil recoveries from sweet basil (Ocimum basilicum L.) leaves was evaluated. Moreover, the consideration on the use of hydrodistilled residue by-products as a source of bioactive phytochemicals with antioxidant, antimicrobial, and repellent effects against the stored-grain pest Tribolium castaneum was examined. Results showed that the enzymatic pretreatment increased the extraction yield of essential oil by 400, 417, and 478% in hemicellulase-, cellulase-, and viscozyme-treated samples, respectively. Phenylpropanoids including methyl cinnamate, methyl eugenol, eugenol and estragol were found as the main components, and were particularly abundant in cellulase-treated samples. From the hydrodistilled residue of enzyme-treated samples, better recoveries of total phenols (TPC) (258.3-470.9 mg GAE/g extract) and flavonoids (TFC) (59.4-94.3 mg QE/g extract) were observed. Using the DPPH, ABTS, and FRAP assays, a strong antioxidant activity of the rosmarinic-rich extract was observed. Such an activity which was mediated through electron transfer mechanism was highly correlated with the TPC, TFC and rosmarinic acid content. The in vitro bioassay showed that methanol extract (6.29 and 12.58 mu L/cm(2)) had repellent activity against the stored-grain pest Tribolium castaneum. These results suggest the potential of enzyme pretreatment to promote the use of hydrodistilled residue by-products as a valuable source of natural antioxidants and repellents ingredients. (C) 2020 Published by Elsevier B.V. on behalf of King Saud University.
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Reference:
Article; Weng, Shiue-Shien; Ke, Chih-Shueh; Chen, Fong-Kuang; Lyu, You-Fu; Lin, Guan-Ying; Tetrahedron; vol. 67; 9; (2011); p. 1640 – 1648;,
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