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Document details

11 of 30

Nanosilver microalgae biosynthesis: Cell appearance based on SEM and EDX methods

(Conference Paper) (Open Access)

, , ,

Biotechnology Laboratory, Biology Department, Sciences and Mathematic Faculty, University of Diponegoro, Jl. Prof.

Sudharto SH, Tembalang Semarang, 50275, Indonesia

Oceanography Laboratory, Fisheries and Marine Science Faculty, University of Diponegoro, Jl. Prof. Sudharto, SH, Semarang, 50275, Indonesia

Physics Laboratory, Sciences and Mathematic Faculty, University of Diponegoro, Jl. Prof. Sudharto, SH, Semarang, 50275, Indonesia

Abstract

Microbial contamination has caused public health problems in the world population. This problem has spurred the development of methods to overcome and prevent microbial invasion. The extensive use of antibiotics has facilitated the continued emergence and spread of resistant organisms. Synthesized of silver nanoparticle (AgNPs) on microalgae Chlorella pyrenoidosa oﬀer environmentally safe antimicrobial agent. The present study is focused on the biosynthesis of AgNPs using microalgae C. pyrenoidosa. The research methods was conducted by insertion of nanosilver particle into microalgae cells with and without agitation to speed up the process of formation nanosilver microalgae. The formation of microalgae SNP was analyzes by UV-Vis spectrophotometer, Scanning Electron Micrograph (SEM) and Energy-dispersive X-ray spectroscopy (EDX) methods. The research result showed that nanosilver microalgae biosynthesis using the agitation treatment was exhibited better performance in particle insertion and cell stability, comparing with no agitation treatment. However, synthesis of nanosilver microalgae tend to reduce the cell size. © Published under licence by IOP Publishing Ltd.

SciVal Topic Prominence

Topic:

Prominence percentile: 99.928

Indexed keywords

Engineering controlled terms:

Antimicrobial agents Biochemistry Biosynthesis Cells Cytology Energy dispersive spectroscopy Microorganisms Scanning electron microscopy Silver nanoparticles

Engineering uncontrolled terms

Appearance based Chlorella pyrenoidosa Energy dispersive X ray spectroscopy Environmentally safe Microbial contamination Scanning electron micrographs Silver nanoparticles (AgNps) UV-Vis spectrophotometers

Engineering main heading:

Algae

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Journal of Physics: Conference Series

Volume 1025, Issue 1, 30 May 2018, Article number 012084

7th International Seminar on New Paradigm and Innovation on Natural Sciences and Its Application, ISNPINSA 2017; Semarang; Indonesia; 17 October 2017 through 17 October 2017;

Code 136783

Kusumaningrum, H.P.^a  Zainuri, M.^b Marhaendrajaya, I.^c Subagio, A.^c

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References (24) Funding details

Funding sponsor Funding number Acronym

344-43/UN7.5.1/PP/2017

Funding text

The authors gratefully thank to Directorate of Research and Public Services (Dirlitabmas), Indonesian Ministry of Research, technology and Higher Education according to Letter of Assigment of Hibah PUPT, Number : 344- 43/UN7.5.1/PP/2017 date 5 May 2017 in funding this research.

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ISSN: 17426588

Source Type: Conference Proceeding Original language: English

DOI: 10.1088/1742-6596/1025/1/012084 Document Type: Conference Paper

Volume Editors: Khumaeni A.,Warsito B.,Putro S.P.

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Publisher: Institute of Physics Publishing

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Biosynthesis of silver nanoparticles using Ulva fasciata (Delile) ethyl acetate extract and its activity against Xanthomonas campestris pv. malvacearum

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The 7th International Seminar on New Paradigm and Innovation on Natural Science and Its Application

17 October 2017, Semarang, Indonesia

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α-Amylase inhibitor activity of endophytic bacteria isolated from Annona muricata L

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PAPER • OPEN ACCESS

The 7th International Seminar on New Paradigm and Innovation on Natural Science and Its Application

Published under licence by IOP Publishing Ltd

Journal of Physics: Conference Series, Volume 1025, conference 1

Abstract

PREFACE

The 7th International Seminar on New Paradigm and Innovation on Natural Sciences and Its Application (ISNPINSA-7) is annual conferences organized by Faculty of Sciences and Mathematics (FSM) Diponegoro University and has been successfully conducted since 2011.

The aims of ISNPINSA are to facilitate brain storming and state of the art information in field of sciences and mathematics; to increase innovation of technology that can be applied in industries; to contribute in formulating strategy to increase the role of science for

community; and to stimulate collaboration between industries, researchers and government to increase community welfare. The theme of 7 ISNPINSA in 2017 is "Science and Data Science for Sustainable Development Goals".

This site uses cookies. By continuing to use this site you agree to our use of cookies. To find out

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2018 J. Phys.: Conf. Ser. 1025 011001

https://doi.org/10.1088/1742-6596/1025/1/011001 Buy this article in print

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The scope of the field of participants comes from various fields including biology, physics, chemistry, statistics, mathematics, informatics, environment, public health, and relevant fields that contribute to sustainable development. The conference was held in Semarang, Indonesia on October, 17 , 2017. There were three keynote speakers and three invited speaker who came from Japan, Italy, Malaysia, Philipines and Indonesia. The number of participants of this seminar were more than 200 consist of researchers, lecturers,

postgraduate and undergraduate students from various universities and after the selection process there are 132 articles selected to be published in the present conference proceeding.

The Editors Dr. Budi Warsito

Sapto Purnomo Putro, Ph.D.

Ali Khumaeni, Ph.D.

Lists of Conference Photographs, Referees, Speakers and Committees are available in this pdf.

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Workshop and International Seminar on Science of Complex Natural Systems Once a physicist: Jon Palfreman

International Seminar on Mathematics and Physics in Sciences and Technology 2017 (ISMAP 2017)

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6/18/2020 Lipid production from tapioca wastewater by culture of Scenedesmus sp. with simultaneous BOD, COD and nitrogen removal - IOPs…

https://iopscience.iop.org/article/10.1088/1742-6596/1025/1/012075 1/3

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PAPER • OPEN ACCESS

Lipid production from tapioca wastewater by culture of Scenedesmus sp. with simultaneous BOD, COD and nitrogen removal

Romaidi , Muhammad Hasanudin , Khusnul Kholifah , Alik Maulidiyah , Sapto P. Putro , Akira Kikuchi and Toshifumi Sakaguchi

Published 1 May 2018 • Published under licence by IOP Publishing Ltd Journal of Physics: Conference Series, Volume 1025, Number 1

Abstract

The use of microalgae to produce biodiesel or possibly remove nutrients from industrial wastewater has gained important attention during recent years due to their photosynthetic rate and its versatile nature to grow in various wastewater systems. In this study, a microalgae, Scenedesmus sp., was This site uses cookies. By continuing to use this site you agree to our use of cookies. To find out

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Department of Biology, Faculty of Science and Technology, Universitas Islam Negeri Maulana Malik Ibrahim Malang, Indonesia

Faculty of Science and Mathematics, Diponegoro University, Semarang, Indonesia Faculty of Agriculture, University of Brawijaya, Malang, Indonesia

Institute of Environmental and Water Resource Management, Universiti Teknologi Malaysia (UTM)

Faculty of Environmental and Life Science, Prefectural University of Hiroshima, Japan Romaidi et al 2018 J. Phys.: Conf. Ser. 1025 012075

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6/18/2020 Lipid production from tapioca wastewater by culture of Scenedesmus sp. with simultaneous BOD, COD and nitrogen removal - IOPs…

cultured to enhance the lipid production and nutrients removal from tapioca wastewater sample. To assess lipid production, Scenedesmus sp. was cultured in different concentration of tapioca

wastewater sample (from 0 to 100 %), and nutrient removal including BOD, COD, NH , NO , NO level by Scenedesmus sp. was assessed in 100% of tapioca wastewater culture. After 8 days of culture, it was found out that 50% of tapioca wastewater sample resulted in highest concentration of lipid content than that of the other concentrations. The level of environment indicator as nutrient removal such as BOD, COD, NH , NO , NO were also decreased up to 74%, 72%, 95%, 91%, and 91%, respectively. The pH condition changed from initial condition acidic (pH: 4) to neutral or basic condition (pH: 7-8) as recommended in wastewater treatment system. This research provided a novel approach and achieved efficient simultaneous lipid production and nutrients removal from tapioca wastewater sample by Scenedesmus's culture system.

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6/18/2020 Polymorphism of Cyp1a1 (T6235C) is not a significant risk factor of osteoporosis in postmenopausal Indonesian woman - IOPscience

NOTICE: Ensuring subscriber access to content on IOPscience throughout the coronavirus outbreak - see our remote access guidelines.

Polymorphism of Cyp1a1 (T6235C) is not a significant risk factor of osteoporosis in

postmenopausal Indonesian woman

EI Auerkari , LW Budhy , R Kiranahayu , NZ Djamal , LS Kusdhany , TBW Rahardjo and Christopher Talbot

Published 1 May 2018 • Published under licence by IOP Publishing Ltd Journal of Physics: Conference Series, Volume 1025, Number 1

Abstract

Osteoporosis is an increasingly common disease resulting in reduced bone mineral density (BMD) and elevated likelihood of bone fracture, and particularly affected are postmenopausal women with additional risk factors including genetic predisposition. The CYP1A1, is one of the candidate genes that have been suggested to be associated with the pathogenesis of osteoporosis. This work aimed to evaluate the distribution of a selected polymorphism of this gene (T6235C) with respect to the BMD This site uses cookies. By continuing to use this site you agree to our use of cookies. To find out

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eiauerkari@yahoo.com

Department of Oral Biology, Faculty of Dentistry, Universitas Indonesia, Jakarta, Indonesia Department of Prosthodontics, Faculty of Dentistry, Universitas Indonesia, Jakarta, Indonesia Center for Ageing Studies, Universitas Indonesia, Jakarta, Indonesia

Department of Genetics, University of Leicester, Jakarta, Indonesia Jl. Salemba Raya 4, DKI Jakarta 10430, Indonesia

EI Auerkari et al 2018 J. Phys.: Conf. Ser. 1025 012060 https://doi.org/10.1088/1742-6596/1025/1/012060 Buy this article in print

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6/18/2020 Polymorphism of Cyp1a1 (T6235C) is not a significant risk factor of osteoporosis in postmenopausal Indonesian woman - IOPscience

status in postmenopausal Indonesian women. The results show that osteoporosis is associated with age and menopause, as expected, but not with the tested polymorphism of CYP1A1 in the

Indonesian sample population. It is suggested that other P450 cytochrome enzymes and their polymorphisms could provide more significant indicators of the future health of postmenopausal women.

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A comparison between the patella and the calcaneus using ultrasound velocity and attenuation as predictors of bone mineral density

Effects of nano calcium carbonate and nano calcium citrate on toxicity in ICR mice and onbone mineral density in an ovariectomized mice model

Trabecular Pattern Analysis Using Fractal Dimension

Accuracy of cortical and trabecular bone measurements with peripheral quantitative computed tomography (pQCT)

Photon scattering measurements of calcaneal bone density: results of in vivo longitudinal studies Peripheral QCT: a low-risk procedure to identify women predisposed to osteoporosis

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6/18/2020 The impact of ozonated water treatment on growth rate of 'Srikandi' tilapia (Oreoshromis Aureus X Niloticus) - IOPscience

NOTICE: Ensuring subscriber access to content on IOPscience throughout the coronavirus outbreak - see our remote access guidelines.

The impact of ozonated water treatment on growth rate of 'Srikandi' tilapia (Oreoshromis Aureus X Niloticus)

Sapto Putro , Devi Adityarini and R.T. Chiang

Published 1 May 2018 • Published under licence by IOP Publishing Ltd Journal of Physics: Conference Series, Volume 1025, Number 1

Abstract

The impact of ozonized water treatment on 'Srikandi' tilapia was assessed using ozone reactor with an airflow velocity of 1.5 L / min at a voltage of 10 kV, which leads to that the dissolved oxygen (DO) content increases from 0.99 to 11.11 mg / L. The ozonized water treatment was divided into five groups based on the length of treatment period: 5 minutes as group I, 10 minutes as group II, 15 minutes as group III, 20 minutes as group IV and 0 minute (Reference case). The fish growth rate was measured in terms of length and weight per seven days for 30 days. The result indicated that the This site uses cookies. By continuing to use this site you agree to our use of cookies. To find out

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saptoputro@gmail.com

Center of Marine Ecology and Biomonitoring for Sustainable Aquaculture (Ce-MEBSA), Integrated Laboratory, Diponegoro University, Tembalamg Campus, Semarang, Central Java, Indonesia

Department of Biology, Faculty of Sciences and Mathematics, Diponegoro University, Tembalang, Semarang, Indonesia

Energy Engineering Service, San Jose, California, USA Sapto Putro et al 2018 J. Phys.: Conf. Ser. 1025 012055 https://doi.org/10.1088/1742-6596/1025/1/012055 Buy this article in print

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6/18/2020 The impact of ozonated water treatment on growth rate of 'Srikandi' tilapia (Oreoshromis Aureus X Niloticus) - IOPscience

fastest growth rate of 'Srikandi' tilapia occured at the group III (length growth: 7.82 cm; weight growth: 7.72 g in 30 days). The fastest Specific Growth Rate (SGR) of the fish occured at the group II (1.281%), and the fastest Relative Growth Rate (RGR) of the fish occurs at the group III

(4.538%). The oxygen content, temperature, salinity to match the growth of Tilapia 'Srikandi' are vital elements in Tilapia farming management. These results are considered to be useful to increase the production rate of 'Srikandi' tilapia farming.

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Polyculture Engineering technology of larasati red tilapia (Oreochromis niloticus) and white shrimp (Litopenaeus vannamei) based for protease enzyme

The effectiveness of crude papain enzyme supplement for tilapia’s (Oreochromis niloticus) growth at the floating nets of Cirata Reservoir

Isolation of fish skin and bone gelatin from tilapia (Oreochromis niloticus): Response surface approach Characteristic study of chitosan addition in Tilapia (Oreochromis niloticus) bone based gelatin film

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6/18/2020 Effect of white tea and xylitol on structure and properties of demineralized enamel and jawbone - IOPscience

NOTICE: Ensuring subscriber access to content on IOPscience throughout the coronavirus outbreak - see our remote access guidelines.

Effect of white tea and xylitol on structure and properties of demineralized enamel and jawbone

EI Auerkari , R Kiranahayu , D Emerita , P Sumariningsih , D Sarita , MS Adiwirya and AW Suhartono

Published 1 May 2018 • Published under licence by IOP Publishing Ltd Journal of Physics: Conference Series, Volume 1025, Number 1

Abstract

White tea and xylitol have been suggested as potential agents to combat dental caries and

osteoporosis through enhanced remineralization. This investigation aimed to determine the effects of exposure to white tea with and without xylitol on the structure, composition and hardness of

demineralized human dental enamel. For control, samples of untreated and demineralized enamel and samples of untreated rat jawbone were subjected to similar measurements. For demineralization, the enamel samples were immersed for two days at 50°C in an acetate solution (pH 4.0). All

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eiauerkari@yahoo.com

Department of Oral Biology, Faculty of Dentistry, Universitas Indonesia, Jakarta Department of Prosthodontics, Faculty of Dentistry, Universitas Indonesia, Jakarta Center for Ageing Studies, Universitas Indonesia, Jakarta, Indonesia

Department of Genetics, University of Leicester, Jakarta, Indonesia Jl Salemba Raya 4, DKI Jakarta, 10430, Indonesia

EI Auerkari et al 2018 J. Phys.: Conf. Ser. 1025 012045 https://doi.org/10.1088/1742-6596/1025/1/012045 Buy this article in print

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6/18/2020 Effect of white tea and xylitol on structure and properties of demineralized enamel and jawbone - IOPscience

samples were then soaked for two weeks at 37°C in a solution containing three different concentrations of white tea, xylitol or both, and an optional addition of the remineralization ingredients including Ca, P and F. For enamel samples without preceding demineralization and without added remineralization ingredients, the results showed highest mean hardness after immersion in a solution containing both white tea and xylitol, practically independently of their applied concentration level. However, for demineralized enamel samples with added

remineralization ingredients, the resulting mean hardness was also dependent on concentration of white tea and xylitol. With sufficient concentration, hardness was again higher for combined white tea and xylitol than for either of these used alone.

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An in vitro study of the microstructure, composition and nanoindentation mechanical properties of remineralizing human dental enamel

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In-vitro study investigating influence of toothpaste containing green tea extract on the microhardness of demineralized human enamel

Influence of sodium content on the properties of bioactive glasses for use in air abrasion

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(23)

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