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Author: Dr. Priyanka Chandra

No Photo Total Articles: 7 | Total Views: 4070 | Points Scored: 7,570

City: KARNAL | State: Haryana, India

About Me: I am scientist at Crop Protection Division, ICAR- Indian Institute of Wheat and Barley Research, Karnal, Haryana

Articles by Dr. Priyanka Chandra:
  • Antioxidants from Plant Sources: A Review ( 282 reads)   

    This article is a review of antioxidants from plant sources. Antioxidants are used in dietary supplements in the hope of maintaining health and preventing diseases such as cancer and coronary heart disease. Epidemiological studies have shown that higher intake of fresh vegetables, fruits, tea and wines, which are proved as good source of natural antioxidants and are associated with reduced risk of heart disease. This is the reason for the strong interest in natural antioxidants and their role in human health and nutrition - Category: Biology
  • Plasticulture: A New Application in Agriculture ( 681 reads)   

    Plasticulture represents use of plastics in water management, agriculture, hi-tech horticulture and related areas. Plastic products in form of film sheets, tubing's, nets, moulded products and in many other forms are used in plasticulture applications. - Category: Agriculture
  • Biofortification of Iron in Plants by Plant Growth Promoting Rhizobacteria (PGPR) ( 497 reads)   

    Micronutrient malnutrition is a serious problem to human health throughout the world, primarily in resource limited countries. There are several methods for coping with this problem but this malnutrition can be reduced through a natural process called biofortification: a process to produce micronutrient enriched staple food. Plant growth promoting rhizobacteria (PGPR) can fortify iron content in tissues of plant by increasing its availability through various mechanisms. - Category: Agriculture
  • RNAi Interference (RNAi): A functional genomics tool ( 458 reads)   

    RNAi interference (RNAi) has emerged as one of the major functional genomics tool in plant study. RNAi involves in the production of double-stranded RNA (dsRNA) that is homologous to the gene which is being targeted for Post Transcriptional Gene Silencing (PTGS). - Category: Agriculture
  • Induced Systemic Resistance (ISR) ( 471 reads)   

    Plant-growth-promoting rhizobacteria (PGPR) colonize the rhizosphere of many plant species and confer beneficial effects and also elicit physical or chemical changes related to plant defense, this mechanism is known as Induced Systemic Resistance (ISR). - Category: Agriculture
  • Description of Various Assay Procedures for Determination of Antioxidant Activity ( 996 reads)   

    This article provides methods available for the measurement of antioxidant capacity and presented the general chemistry underlying the assays. This overview provides a basis and rationale for developing standardized antioxidant capacity methods for the food, nutraceutical, and dietary supplement industries. - Category: Applications
  • Concept of Free Radicals and Antioxidants ( 685 reads)   

    During normal cellular activities, various processes inside of cells produce reactive oxygen species (ROS). Some of the most common ROS are hydrogen peroxide, superoxide ion, and hydroxide radical. These compounds, when present in a high enough concentration, can damage cellular proteins and lipids or form DNA adducts that may promote carcinogenic activity. The purpose of antioxidants in a physiological setting is to prevent ROS concentrations from reaching a high-enough level within a cell that damage may occur. Cellular antioxidants may be enzymatic (catalase, glutathione peroxidase, superoxide dismutase) or nonenzymatic (glutathione, thiols, some vitamins and metals, or phytochemicals such as isoflavones, polyphenols, and flavanoids). In normal physiological processes, antioxidants effect signal transduction and regulation of proliferation and the immune response. Reactive oxygen species have been linked to cancer and CVD, and antioxidants have been considered promising therapy for prevention and treatment of these diseases, especially given the tantalizing links observed between diets high in fruits and vegetables (and presumably antioxidants) and decreased risks for cancer. - Category: Biology

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