Effect of Stevia rebaudiana Pure and Crude Leaf Powder on the Heat Resistance of Drosophila melanogaster
Author : Gunavathi NL, Soundarya KL, G Pavithra, Sneha R Rao, Shrinidhi G Galabi and Shakunthala V
Abstract :
The frequency of an organism's exposure to its environment and the physiological costs associated with it determine how much genetic variation in stress tolerance led to adaptive change. An organism's capacity to tolerate stress can be influenced by a wide range of factors, which can lead to physiologic and behavioral changes. The name "Stevia" is a general phrase that can be used to describe several forms of the sweetener, such as the leaves of the plant (S. rebaudiana Bertoni) and the entire plant. A preparation known by the general term "stevia extract" is created by steeping the leaves of the stevia plant in order to extract the plant's sweet components. There are eleven primary steviol glycosides; the most common ones are stevioside and rebaudioside A. One steviol glycoside or several glycosides, which can be up to 250-300 times sweeter than sucrose, can be found in purified stevia leaf extracts. The flies (control and treated flies), in vials were kept in incubator at 40oC. The flies were observed for every 15 minutes of interval until the death of each fly. The data is analyzed and discussed.
Keywords :
D.melanogaster, diet, heat resistance, stevia, stevia dried leaf, mated flies
