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RISS 인기검색어
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- 저자 : Saba Noor (검색결과 2 건)
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Biomedical features and therapeutic potential of rosmarinic acid
Saba Noor,Taj Mohammad,Malik Abdul Rub,Ali Raza,Naved Azum,Dharmendra Kumar Yadav,Md Imtaiyaz Hassan,Abdullah M. Asiri 대한약학회 2022 Archives of Pharmacal Research Vol.45 No.4
For decades, the use of secondary metabolitesof various herbs has been an attractive strategy in combatinghuman diseases. Rosmarinic acid (RA) is a bioactivephenolic compound commonly found in plants of Lamiaceaeand Boraginaceae families. RA is biosynthesizedusing amino acids tyrosine and phenylalanine via enzymecatalyzedreactions. However, the chemical synthesis of RAinvolves an esterifi cation reaction between caff eic acid and3,4-dihydroxy phenyl lactic acid contributing two phenolicrings to the structure of RA. Several studies have ascertainedmultiple therapeutic benefi ts of RA in various diseases,including cancer, diabetes, infl ammatory disorders, neurodegenerativedisorders, and liver diseases. Many previousscientifi c papers indicate that RA can be used as an antiplasmodic,anti-viral and anti-bacterial drug. In addition,due to its high anti-oxidant capacity, this natural polyphenolhas recently gained attention for its possible applicationas a nutraceutical compound in the food industry. Here we provide state-of-the-art, fl exible therapeutic potential andbiomedical features of RA, its implications and multipleuses. Along with various valuable applications in safeguardinghuman health, this review further summarizes thetherapeutic advantages of RA in various human diseases,including cancer, diabetes, neurodegenerative diseases. Furthermore,the challenges associated with the clinical applicabilityof RA have also been discussed.
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Microwave-assisted urea-modified sorghum biomass for Cr (III) elimination from aqueous solutions
Muhammad Salman,Makshoof Athar,Umar Farooq,Huma Nazir,Anam Noor,Saba Nazir 한국화학공학회 2013 Korean Journal of Chemical Engineering Vol.30 No.6
The present study concentrated on the use of an agro-waste biodegradable sorghum biomass in its simple and modified forms for the binding of Cr (III) ions. A relatively new method of modification was adopted using urea under microwave irradiation. FTIR analysis showed the presence of oxygen and nitrogen bearing functional groups in unmodified (UMS) and modified (MS) sorghum biomass. The appearance of new bands and shifts in the peaks confirmed the modification. The influence of different process parameters such as the adsorbent dose, solution pH, contact time, agitation speed and initial metal ion concentration was studied thoroughly to evaluate optimum conditions for adsorption. Maximum adsorption for Cr (III) ions occurred at pH 5.0-6.0 using UMS and MS. Langmuir, Freundlich,Temkin, and Dubinin-Radushkevich isotherm models in a non-linear fashion were used to explain the phenomenon. Maximum adsorption capacity was 7.03 and 16.36 mg of Cr (III) per gram of UMS and MS, respectively. Adsorption mechanism was explored by pseudo-first- and pseudo-second-order kinetic models, and it was found that the process followed pseudo-second-order kinetics. Thermodynamic study indicated the process favorability. The study concluded that urea modification under microwave irradiation produces a non-toxic and more effective adsorbent for Cr (III) remediation by inducing new nitrogen bearing functional groups to sorghum biomass.
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