MICROWAVE AND ULTRASONICATION ASSISTED EXTRACTION OF PHYTOCHEMICALS FROM B. monnieri AND STUDY OF ITS ANTIOXIDANT ACTIVITY

نویسندگان

  • RENCY ELIZABETH THOMAS
  • S. D. KAMAT
  • D. V. KAMAT
چکیده

Plant extracts having an inhibitory effect on aging may be a good choice for cosmetic applications because of their natural origin. The extraction of bioactive compounds from plants is one of the most critical steps in the commercial development of natural products. Therefore rapid and efficient phytochemical extraction methods are essential. The present study involves the use of microwave and ultrasonication as methods to extract phytochemicals from B. monnieri. The efficiency of the extraction methods were studied by determining the saponin content and the antioxidant activity of the extracts by the Vanillin sulphuric acid and the DPPH method respectively. The study revealed a 5.01% increase in the yield of saponins and 12.61% increase in the antioxidant activity of the microwave extract. The extracts prepared using ultrasonication yielded a 1.47% and 9.08% increase in saponin content and antioxidant activity respectively. Thus the study revealed the superiority of Microwave and Ultrasonication assisted extraction compared to the conventional extraction method.

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Comparative study of Antiplatelet Aggregation Activity of Bacopa monnieri extracted using Microwave and Ultrasonication

Plant extracts having an antiplatelet aggregation activity may be a potential choice for development of antiinflammatory drugs because of their natural origin. The extraction of bioactive compounds being the most crucial step in the commercial development of natural products it is essential to have rapid and efficient phytochemical extraction methods. Extracts of B. monnieri were prepared using...

متن کامل

Gains from diversification on convex combinations: A majorization and stochastic dominance approach

By incorporating both majorization theory and stochastic dominance theory, this paper presents a general theory and a unifying framework for determining the diversification preferences of risk-averse investors and conditions under which they would unanimously judge a particular asset to be superior. In particular, we develop a theory for comparing the preferences of different convex combination...

متن کامل

Improved immunogenicity of tetanus toxoid by Brucella abortus S19 LPS adjuvant.

BACKGROUND Adjuvants are used to increase the immunogenicity of new generation vaccines, especially those based on recombinant proteins. Despite immunostimulatory properties, the use of bacterial lipopolysaccharide (LPS) as an adjuvant has been hampered due to its toxicity and pyrogenicity. Brucella abortus LPS is less toxic and has no pyrogenic properties compared to LPS from other gram negati...

متن کامل

Steady electrodiffusion in hydrogel-colloid composites: macroscale properties from microscale electrokinetics.

A rigorous microscale electrokinetic model for hydrogel-colloid composites is adopted to compute macroscale profiles of electrolyte concentration, electrostatic potential, and hydrostatic pressure across membranes that separate electrolytes with different concentrations. The membranes are uncharged polymeric hydrogels in which charged spherical colloidal particles are immobilized and randomly d...

متن کامل

Perturbative Analysis of Dynamical Localisation

In this paper we extend previous results on convergent perturbative solutions of the Schrödinger equation of a class of periodically timedependent two-level systems. The situation treated here is particularly suited for the investigation of two-level systems exhibiting the phenomenon of (approximate) dynamical localisation. We also present a convergent perturbative expansion for the secular fre...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

عنوان ژورنال:

دوره   شماره 

صفحات  -

تاریخ انتشار 2013