TAILIEUCHUNG - Eco-friendly synthesis of gold nanoparticles using averrhoa carambola L.

In this work we report an eco-friendly method for the synthesis of gold nanoparticles (AuNPs) using Averrhoa carambola L. fruit extract at different temperatures. AuNPs were formed and coated conjugatedly with the components of aqueous fruit extract of Averrhoa carambola L. as verified under UV-vis spectroscopy, transmission electron microscopy (TEM) and used for testing of antimicrobial activity. AuNPs - Averrhoa carambola L. extract combination showed synergistic effect on the antibacterial activity as judged by well diffusion method. | Journal of Science and Technology 54 (2A) (2016) 14-20 ECO-FRIENDLY SYNTHESIS OF GOLD NANOPARTICLES USING AVERRHOA CARAMBOLA L. Nguyen Thi Nhat Hang1, 2, *, Mai Thi Ngoc Lan Thanh2, 3, Nguyen Anh Dung 2, Tran Ngoc Hung 2, Nguyen Thi Phuong Phong 1 1 University of Science Ho Chi Minh City, 227 Nguyen Van Cu street, District 5, Ho Chi Minh City, Vietnam Ho Chi Minh City 2 Thu Dau Mot University, No. 6 Tran Van On Street, Phu Hoa Ward, Thu Dau Mot City, Binh Duong Province, Vietnam 3 Ho Chi Minh City University of Technology, 268 Ly Thuong Kiet street, District 10, Ho Chi Minh City, Vietnam * Email: hangntn@ Received: 6 May 2016; Accepted for publication: 20 June 2016 ABSTRACT In this work we report an eco-friendly method for the synthesis of gold nanoparticles (AuNPs) using Averrhoa carambola L. fruit extract at different temperatures. AuNPs were formed and coated conjugatedly with the components of aqueous fruit extract of Averrhoa carambola L. as verified under UV-vis spectroscopy, transmission electron microscopy (TEM) and used for testing of antimicrobial activity. AuNPs - Averrhoa carambola L. extract combination showed synergistic effect on the antibacterial activity as judged by well diffusion method. AuNPs alone did not showed the antibacterial activity, and Averrhoa carambola L. extract had the inhibition zone of ± mm, while the combination of AuNPs Averrhoa carambola L. extract showed ± mm inhibition zone when Averrhoa carambola L. extract was 285 mg/ml. Therefore, green-synthesized AuNPs by our protocol are potential to biomedical applications. Keywords: gold nanoparticles, Averrhoa carambola L., antibacterial, eco-friendly method. 1. INTRODUCTION During the past several years, the studies are focused towards greener method for the synthesis of nanoparticles. Among them, gold nanoparticles (AuNPs) are attractive materials due to their potential applications in diverse fields, including drug delivery, sensors and .

• Sinh học
• Journal of Science and Technology
• Eco friendly synthesis of gold nanoparticles
• Averrhoa carambola L
• The synthesis of gold nanoparticles
• Transmission electron microscopy
• Journal of Marine science and Technology
• Marine science and Technology
• Marine science and Technology no 56
• Marine science and Technology year 2018
• Evaluation method
• Electrical energy management model
• Marine science and Technology no 53
• Diesel engines
• Journal of Fisheries science and Technology
• Fisheries science and Technology
• Fisheries science and Technology no 3
• Fisheries science and Technology year 2016
• Striped catfish
• Common carp cyprinus carpio
• Fisheries science and Technology no 4
• Fisheries science and Technology year 2018
• Coastal fi shing activities
• White striped cleaner shrimp
• Journal of Science
• Journal of Technology
• Technology Management
• Science and Technology
• International integration
• Science and Technology Strategy
• Evaluation of science and technology
• Global journal of computer science
• Global journal of computer science and technology
• Information & technology
• GIS based fire emergency response system
• Marine science and technology no 61
• Actual GPS receivers
• Display information on stability
• Nuclear science and technology
• The journal of Nuclear science and technology
• Rotary rack served for elemental concentration
• Seawaterusing co precipitation method
• Natural radionuclides
• Experimental data
• Low energy experiments
• Multigroup cross sections
• Stable isotopic values
• Radial blanket
• Dissolved nitrogen compounds
• Irradiation channels
• Neutron rich nuclei
• Prescila neutron probe
• Full core conversion
• Multipurpose research reactor
• Aquatic environment
• Geochemical parameters
• External reactor vessel cooling method
• Radiation crosslinked scaffolds
• Adipose derived stem cell culture
• Treatment plans
• Minor actinide compositions
• IM NAA of non standard geometrical samples
• Cross shaped obstacle
• University entrepreneurship
• Entrepreneurial research university
• Technology innovation
• Industry university cooperation
• Regional innovation
• Journal of technology and science education
• Bring science and technology closer to secondary school
• Technology closer to secondary school
• Secondary school teachers
• Face to face
• Technology development
• Technology commercialization
• The role of informal science centers in science education
• Informal science center
• Attudes toward science
• Scientfic thinking skills
• Scientific research
• Research quality
• Strategy and policy
• Research Organizations
• Policy Planning
• Science and Technology development
• Theory Z
• Human Resources
• Development policy of Japan
• ‘Standards’ on the bench
• Technological literacy render an adequate image of technology
• Adequate image of technology
• Standards for technological literacy
• Philosophy of technology
• The nature of technology
• Concepts of technology
• Post secondary project based learning in science
• Post secondary project based learning in technology
• Post secondary project based learning in engineering and mathematics
• Post secondary project