International Journal of Modern Chemistry
ISSN: 2165-0128 (online)Search Article(s) by:
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Current Issue: Vol. 14 No. 1or Keyword in Title:
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Table of Content for Vol. 14 No. 1, 2022

Comparison of Antioxidant Capacities of Several Kinds of Pitaya
Si-Xia Wu, Shi-Yu Cao, Adila Saimaiti, Hua-Bin Li
      
 PP. 1 - 7
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ABSTRACT: Pitaya (Hylocereus undatus) is a fruit with rich nutritional properties, and widely cultivated in the world. The antioxidant capacities, total phenolic contents (TPC) and total flavonoid contents (TFC) of three kinds of pitaya were evaluated and compared, including red peel and red pulp pitaya, red peel and white pulp pitaya, and yellow peel and white pulp pitaya. The antioxidant capacities of 50% ethanol and 80% methanol extracts of three kinds of pitaya were evaluated using ferric-reducing antioxidant power (FRAP) and Trolox equivalent antioxidant capacity (TEAC) assays, respectively. The TPC and TFC values of the extracts from three kinds of pitaya were determined by the Folin-Ciocalteu method and AlCl3 colorimetry, respectively. The results showed that red peel and white pulp pitaya peel possessed the highest TPC and TFC values, while red peel and red pulp pitaya peel and pulp had the highest FRAP and TEAC values among six samples, respectively. This paper was helpful for the people to choose pitaya as well as utilization of pitaya’s peels.


Review on Study of Synthetic Methods and Therapeutic Applications of Chalcones
R. Subha, Dr. N. Ingarsal
      
 PP. 8 - 21
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ABSTRACT: Chalcone is a privileged species with medicinal significance as it consists of reactive ketoethylenic moiety –CO– CH=CH– belonging to flavonoids. The presence of a reactive α, β-unsaturated carbonyl function in chalcone and its derivatives is the reason for its pharmacological activities. Chalcones exhibit a wide spectrum of pharmacological effects such as antioxidant, antibacterial, anthelmintic, antiulcer, antiviral, insecticidal, antiprotozoal, anticancer, anti- Suzuki’s reaction, etc. The purpose of this review is to focus on the methods of synthesis of chalcones and their versatile pharmacological activities.