Characterization of DNase(s) activity in tobacco leaf extracts

Plant Science ◽  
1987 ◽  
Vol 52 (1-2) ◽  
pp. 57-65 ◽  
Author(s):  
A. Zilberstein ◽  
T. Koch ◽  
Y. Altschuler ◽  
A. Lers ◽  
A. Zamir
Keyword(s):  
Leaf Extracts ◽  
Tobacco Leaf

Growth abnormalities in microorganisms exposed to tobacco leaf extracts

1974 ◽  
Vol 20 (11) ◽  
pp. 1619-1621 ◽  
Author(s):  
S. A. Ghabrial
Keyword(s):  
Culture Media ◽  
Aqueous Extracts ◽  
Leaf Extracts ◽  
Cultural Changes ◽  
Tobacco Leaves ◽  
Tobacco Leaf ◽  
Yeast Strains ◽  
Extract Medium ◽  
Tobacco Extract ◽  
Growth Abnormalities

Unusual cultural changes were observed when several bacterial and yeast strains were grown on a medium containing aqueous extracts of tobacco leaves. In 24–48 h incubation on such a medium, several dark-brown papilla-like structures developed on the surface of normally smooth colonies. Moreover, smaller dark-brown refractile globular bodies were observed in the medium in areas beneath and surrounding the microbial colonies with papilla-like structures. Attempts to demonstrate the viability of these globular bodies failed. The cultural abnormalities observed on tobacco extract medium were unique to this medium since they were not detected in a wide variety of culture media tested. The lowest concentration of tobacco extract (dry wt. basis), which is required for the development of this phenomenon, was determined to be 0.5 mg/ml of medium.

scholarly journals PEMANFAATAN EKSTRAK DAUN TEMBAKAU (Nicotiana tabacum L) UNTUK MENGENDALIKAN ULAT GRAYAK (Spodoptera litura F) PADA TANAMAN SAWI (Brassica juncea L.) DI LAPANG

AGRICA ◽  
2019 ◽  
Vol 1 (2) ◽  
pp. 1-8
Author(s):  
Maria Goreti Firma
Keyword(s):  
Spodoptera Litura ◽  
Leaf Extract ◽  
Tobacco Plant ◽  
Block Design ◽  
Fresh Weight ◽  
Leaf Extracts ◽  
Tobacco Leaf ◽  
Randomized Block Design ◽  
Nicotiana Tabacum L ◽  
Mustard Plant

This study aims to determine the effect of tobacco plant extracts on mortality of armyworm pests (Spodoptera litura F.) and determine the optimum concentration of tobacco leaf extracts on mortality of armyworm caterpillars on mustard plants in the field. The design used in this study was a Randomized Block Design (RBD) consisting of 5 treatments and 4 replications namely T1: 175 ml/L concentration of tobacco leaf extract, T2: 350 ml/L concentration of tobacco leaf extract T3: Concentration of 525 ml/L tobacco leaf extract, T4: Concentration of 700 ml/L tobacco leaf extract, T5: Concentration of 875 ml/L of tobacco leaf extract. The observation variables in this study were pest mortality (%), damage intensity (%), plant fresh weight, and fresh weight per hectare (ton). The results showed that the concentration of tobacco leaf extracts significantly affected the mortality of Spodoptera litura F. At the concentration of T5 treatment (875 ml) were the lowest damage, pest mortality, fresh weight of the mustard plant, and fresh weight per hectare of was 9.75%, 88%, 109.25 gr, and27.31 tons respectively.

scholarly journals Textural Characterization of Dietetic Amrakhand Prepared by using Stevia Leaf Extracts Powder

2021 ◽  
Author(s):  
Jairaj C. Tondare ◽  
Ashok S. Hembade
Keyword(s):  
Leaf Extract ◽  
Sugar Content ◽  
Control Sample ◽  
Textural Properties ◽  
Leaf Extracts ◽  
Health Consciousness ◽  
Textural Characterization ◽  
High Sugar Content ◽  
Insulin Dependent Diabetic

Background: The name Amrakhand comes from two words ‘aam’ and ‘shrikhand’ literally meaning mango shrikhand. It is popular mango yoghurt in Maharashtra and Gujarat. Amrakhand contains high sugar content, but in the context of health consciousness refined carbohydrate is necessary to curb in the diet of both insulin and non-insulin dependent diabetic patient. Hence dietetic Amrakhand was prepared using stevia to study its effect and suitability as a natural sweetener.Methods: Amrakhand prepared using different proportions of sucrose and powdered stevia leaf extract. The proportions used are 30:70 (T1), 25:75 (T2), 20: 80 (T3), 15:85 (T4), 10:90 (T5) with control sample 100:0 (T0). Textural properties of dietetic Amrakhand such as hardness, consistency, index of viscosity and cohesiveness were evaluated by using a texture analyzer (TA-XT2I, Stable Micro System, UK).Result: Textural parameters reveals that effect of increasing the concentration level of powdered stevia leaf extract, decreases the hardness, consistency, cohesiveness and index of viscosity values of the product. Whereas good sensory results were found at 70% (T1) of sucrose replacement by stevia leaf extract in dietetic Amrakhand. Hence, present paper focused on evaluation of textural characterization of dietetic Amrakhand prepared by using Stevia leaf extracts powder.

scholarly journals Biosynthesis and Characterization of Zinc Sulphide Nanoparticles Using Leaf Extracts of Tridaxprocumbens

2017 ◽  
Vol 33 (2) ◽  
pp. 903-909 ◽  
Author(s):  
M. Sathishkumar ◽  
M. Saroja ◽  
M. Venkatachalam ◽  
G. Parthasarathy ◽  
A. T. Rajamanickam
Keyword(s):  
Zinc Sulphide ◽  
Leaf Extracts

Development, Characterization and Anticancer Evaluation of Silver Nanoparticles from Dalbergia sissoo Leaf Extracts

2020 ◽  
Vol 16 (2) ◽  
pp. 145-151
Author(s):  
Aakash Deep ◽  
Mitali Verma ◽  
Rakesh K. Marwaha ◽  
Arun K. Sharma ◽  
Beena Kumari
Keyword(s):  
Silver Nanoparticles ◽  
Anticancer Activity ◽  
Metal Ion ◽  
Color Change ◽  
Fixed Ratio ◽  
Cancer Cell Line ◽  
Dalbergia Sissoo ◽  
Leaf Extracts ◽  
Standard Drug

Aim: The objective behind this present work is the development and characterization of silver nanoparticles from Dalbergia sissoo leaf extracts and the analysis of anticancer activity. Methods: Silver nanoparticles were prepared by using the aqueous solution of Dalbergia sisoo leaf extract and silver nitrate. The formation of nanoparticles was determined by the color change during the preparation of plant extract to metal ion in a fixed ratio. The prepared nanoparticles were then characterized by TEM, FTIR, DLS, XRD, and SEM. Silver nanoparticles were also evaluated for anticancer activity. Results: Synthesized silver nanoparticles were having good anticancer activity against MCF 7 cancer cell line as compared to the standard drug Doxorubicin. Conclusion: The particle size of nanoparticles was found to lie in the range of 10 to 50 nm.

Characterization of thermolysis products of cuticular wax compounds of green tobacco leaf

1989 ◽  
Vol 17 (1) ◽  
pp. 25-35 ◽  
Author(s):  
William S. Schlotzhauer ◽  
R.F. Arrendale ◽  
R.F. Severson ◽  
O.T. Chortyk
Keyword(s):  
Cuticular Wax ◽  
Tobacco Leaf
Sign in / Sign up

Export Citation Format

Share Document