National Journals
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Item TWO DISTINCT FLUORESCENT QUANTUM CLUSTERS OF GOLD STARTING FROM METALLIC NANOPARTICLES BY PH-DEPENDENT LIGAND ETCHING(Springer Link, 2008) Madathumpady, Abubaker Habeeb Muhammed; Subramani, Ramesh; Sudarson, Sekhar Sinha; Samir Kumar, Pal; Thalappil, PradeepTwo fluorescent quantum clusters of gold, namely Au25 and Au8, have been synthesized from mercaptosuccinic acid-protected gold nanoparticles of 4–5 nm core diameter by etching with excess glutathione. While etching at pH ∼3 yielded Au25, that at pH 7–8 yielded Au8. This is the first report of the synthesis of two quantum clusters starting from a single precursor. This simple method makes it possible to synthesize well-defined clusters in gram quantities. Since these clusters are highly fluorescent and are highly biocompatible due to their low metallic content, they can be used for diagnostic applications.Item ASSESSING POLLUTANT SORPTION EFFICIENCY OF MODIFIED AND UNMODIFIED BIOCHAR WITH BACILLUS CEREUS ON CONTAMINATED LAKE WATER: IMPLICATIONS FOR ORYZA SATIVA SEEDLING AND ARTEMIA FRANCISCANA LARVAE VIABILITY(Springer Link, 2023-10-02) Mathiyazhagan, Narayanan; Ramesh, Subramani; Sabariswaran, KandasamyThis study evaluated the efficacy of biochar in removing pollutants from a polluted lake. Biochar, both with and without Bacillus cereus, was assessed for its sorption potential. The treated water samples were analyzed for toxicity using Oryza sativa and Artemia franciscana larvae. The lake water exceeded permissible limits for pH, turbidity, dissolved oxygen (DO), chemical oxygen demand (COD), biological oxygen demand (BOD), and various metals. The 10-day biosorption study with different treatment groups (MB, UMB, MBB, UMBB, and BC) revealed that the MBB group exhibited remarkable pollutant sorption potential. It achieved pollutant removal percentages of 33.35% for Cd, 15.73% for As, 26.21% for Cr, 32.72% for Pb, 32.81% for Zn, 23.58% for Cu, 5.44% for Cl, 22.01% for Ni, 28.2% for Hg, and 4.19% for SO42−. MBB-treated lake water showed no toxicity, confirming pollutant removal by metal-tolerant Bacillus cereus in modified biochar.Item TWO DISTINCT FLUORESCENT QUANTUM CLUSTERS OF GOLD STARTING FROM METALLIC NANOPARTICLES BY PH-DEPENDENT LIGAND ETCHING(Springer Link, 2010-04-08) Madathumpady Abubaker, Habeeb Muhammed; Subramani, Ramesh; Sudarson, Sekhar Sinha; Samir Kumar, Pal; Thalappil, PradeepTwo fluorescent quantum clusters of gold, namely Au25 and Au8, have been synthesized from mercaptosuccinic acid-protected gold nanoparticles of 4 5 nm core diameter by etching with excess glutathione. While etching at pH ~3 yielded Au25, that at pH 7 8 yielded Au8. This is the fi rst report of the synthesis of two quantum clusters starting from a single precursor. This simple method makes it possible to synthesize well-defined clusters in gram quantities. Since these clusters are highly fl uorescent and are highly biocompatible due to their low metallic content, they can be used for diagnostic applications.Item INSILICO AND PHARMACOLOGICAL PROPERTY ANALYSIS OF BIOACTIVE COMPONENTS FROM PRUNUS AVIUM AGAINST DIABETICS(Informatics Publishing Limited & Natural Remedies Pvt.Ltd, 2022-01-01) Veerapandi L; Nivetha T; Sinthiya R; Karunyah Amirthadharshini N; Bumaasri K; Aishwarya RDiabetes is a common metabolic disorder, which effects people across all cultures globally. Lifelong distress is the cause of this disease which has no cure as of now. Various medications available in the market are too expensive and not easily affordable by all. Rural people rely on plant based Ayurvedic medications to heal diabetes as these contain anti-diabetic compounds. These phytoconstituents/anthocyanin derivatives work with several mechanisms that involve phytoconstituent interactions and target molecules in diabetic metabolism. Molecular docking analysis aids in finding out the interaction between receptors and ligands to identify the finest interaction which suits the target. In this case, the study proposed examining the bonding interactions of anti-diabetic compounds/anthocyanin derivatives derived from medicinal plants (Pelargonidin, Cyanidin, Delphinidin, Peonidin, Petunidin, Quercetin and pancreatic alpha-amylase (4X9Y)) with the help of the computational tool. ADME/T test helps decide different pharmacological and physicochemical analysis of lead atoms, degree of adsorption inside the cell, digestion rate, solvency, blood cerebrum boundary penetrability, cancer-causing nature and so on, which are the significant essentials prior to advertising a medication. Peonidin and Quercetin was proposing the best interactions. Nonetheless, to discover a better cure for diabetes, further in-vitro/ in vivo studies have to be carried out.Item QUALITATIVE PHYTOCHEMICAL ANALYSIS OF EIGHT TURMERIC (CURCUMA LONGA L) CULTIVARS GROWN IN VARIOUS GEOGRAPHICAL LOCATIONS OF INDIA WITH SIX EXTRACTS – A COMPARATIVE STUDY(ScienceDirect, 2022) Salma S; Aariba S; Velvizhi M; Yasmin N; Sudha U.V; Anitha M.C; Naveena Reddy SBeing integral part of Indian cuisine, spices and condiments are reservoir of medicinal and phytochemical properties. The main objective of the study was to qualitatively analyse the phytochemical constituents of eight different cultivars of Indian turmeric with six different extracts. Different turmeric cultivars showed the presence of carbohydrates, proteins and aminoacids, phenolic compounds and tannins. Alkaloids, flavonoids, gums and mucilages, phytosterols were absent in most of the turmeric cultivars. This study concludes that aqueous extracts of different turmeric cultivars have highest phytonutrients in all forms and are recommended as the most preferred option in health and disease for further analyses.Item RESVERATROL-LOADED Β-LACTOGLOBULIN NANOFIBRILS TO PREVENT ENZYMATIC BROWNING ON SLICED APPLE(Applied Food Biotechnology, 2022) Praveetha, Senthilkumar; Vladimir, Shavrov; Petr, Lega; Ramesh, Subramani: Resveratrol is a polyphenol with nutraceutical health benefits used as anticancer, antioxidant and anti-inflammatory with cardio protective effects. However, resveratrol lacks solubility and bioavailability and is affected by UV light, which decrease its use in food industries. It is possible to overcome these problems by loading resveratrol with appropriate biomaterials. Beta-lactoglobulin is known to form well-defined nanofibrils with various uses. The objective of this study was to use β-lg nanoscaled fibrils to increase bioavailability of resveratrol as well as preserving freshness and preventing enzymatic browning of sliced applesItem RECENT DEVELOPMENT IN PREPARATION OF FOOD PACKAGING FILMS USING BIOPOLYMERS(Rynnye Lyan Resources, 2021-12) Suresh S; Pushparaj C; Subramani RIn the past decades, most materials used in the food packaging industry are nonbiodegradable materials that pose increased environmental concerns and sustainability issues. Hence, polymer-based biodegradable materials and edible films have been developed to increase the shelf life of food products. Especially, biopolymer-based nanomaterials are engineered with multifunctional characteristics because of their size, surface area, shelf life, thermal stability, and mechanical and barrier strength. These materials display enriched properties of biodegradability, antimicrobial activity, and biocompatibility and may have the possibility to replace plastic materials in future. Thus, this review offers a brief overview of the classification of biopolymers, key parameters that are important in food packaging films (including the role of plasticizers, cross-linkers, pH, temperature, and relative humidity), and recent applications of novel biopolymer nanocomposite materials used in the food industries.