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All Journal HAYATI Journal of Biosciences VALENSI Journal of Tropical Life Science : International Journal of Theoretical, Experimental, and Applied Life Sciences JURNAL KIMIA SAINS DAN APLIKASI Jurnal Riset Kimia Agrokreatif Jurnal Ilmiah Pengabdian kepada Masyarakat EduChemia: Jurnal Kimia dan Pendidikan KOVALEN: Jurnal Riset Kimia JURNAL HAMA DAN PENYAKIT TUMBUHAN TROPIKA Indonesian Journal of Chemistry Jurnal Jamu Indonesia Jurnal Pusat Inovasi Masyarakat Makara Journal of Science Indonesian Journal of Jamu
Auliya Ilmiawati
Department Of Chemistry, Faculty Of Mathematics And Natural Sciences, IPB University, Bogor 16680, Indonesia. Tropical Biopharmaca Research Center-Institute Of Research And Community Services, IPB University, Bogor 16128, Indonesia
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Earth & Planetary Sciences Education Engineering Environmental Science Health Professions Materials Science & Nanotechnology Medicine & Pharmacology Social Sciences Other

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Journal : Makara Journal of Science

 1 
Blended Film from PVA and Sansevieria trifasciata Dichloromethane Fraction for Reducing Heat Radiation from Smartphones Ilmiawati, Auliya; Pujiyati,; Hidayat, Asep; Sugita, Purwantiningsih; Irfana, Luthfan; Arifin, Budi
Makara Journal of Science Vol. 23, No. 2
Publisher : UI Scholars Hub

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Abstract

It has been reported that the lidah mertua plant (Sansevieria trifasciata) can absorb electromagnetic radiation from vari-ous electronic equipment. The current study aimed to make a film layer from polyvinyl alcohol (PVA) and a dichloro-methane (DCM) fraction of S. trifasciatato reduce heat radiation from smartphones. S. trifasciataleaves were macer-ated using ethanol and partitioned with ethyl acetate, DCM, and n-butanol. The DCM fraction was chosen to create the film, for which PVA was also used. The blended film made from PVA and 0.02% DCM reduced heat radiation from smartphones by up to 4.4 °C starting from the first minute of use; its heat reduction remained stable until the 20th mi-nute. Based on these results, it was determined that the active compounds in the DCM fraction are closely related to saponin-type steroids.
PVA-Sansevieria trifasciata Fraction Films as Absorbers of Electromagnetic and Thermal Radiation on Smartphones Rahmani, Nabiila; Syahbirin, Gustini; Maddu, Akhiruddin; Sugita, Purwantiningsih; Ilmiawati, Auliya
Makara Journal of Science Vol. 27, No. 1
Publisher : UI Scholars Hub

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Abstract

Technological developments have prompted the production of highly advanced smartphones. However, various advanced features cause smartphones to heat up quickly and emit more electromagnetic radiation, which harms human health. Smartphone protection is needed to solve these issues. This study aims to create a film from the S. trifasciata plant based on polyvinyl alcohol (PVA) to reduce electromagnetic and thermal radiation on smartphones. S. trifasciata plants were macerated with acetone and partitioned with n-hexane, dichloromethane, ethyl acetate, and water. The films were made by mixing PVA with the four fractions. Among the four layers of film, the PVA + water and PVA + ethyl acetate fractions reduced electromagnetic radiation by 25.34% and 2.64%, respectively, and smartphone heat by 3.82 °C and 2.8 °C, respectively, the largest reductions. The results of an LC–MS/MS analysis show that the compounds thought to be contained in both fractions and play a major role in reducing electromagnetic and thermal radiation in smartphones are di-(2-ethylhexyl) phthalate, diisononyl phthalate, and two steroidal compounds, namely, stigmasterol and ergosterol peroxide.
Co-Authors Abdul Rohman Adiba, Asfiah Agusta, Dhea Demitri Akhiruddin Maddu Alfi Hudatul Karomah Andi Thaariq Muhammad Arinana Arinana Arini Septianti Asep Hidayat Asep Hidayat Asyari, R. Mugni Chairil Arbi Auliatifani, Reza Ayu Rahmania Lestari Bambang Pontjo Priosoeryanto Budi Arifin Budi Arifin Budi Arifin Budiarti, Eka Desi Wulandari, Desi Eka Budiarti Erlina, Iis Fadia Fahira Fadilah, Nisa Lelita Failasufa, Adzkia Febriany, Retno Putri Fiqri, Muhammad Gustini Syahbirin Gustini Syahbirin Hafizah Fatunisa Hanhan Dianhar Ika Resmeiliana Irma Herawati Suparto Irmanida Batubara Ishika Jauza Nasywa Kenang Sagraha, Ghiffari Khaydanur Khaydanur Khaydanur, Khaydanur Kurniawanti, Kurniawanti Laela Wulansari Larasati, Rizki Marsha Lutfia Mutmainnah Luthfan Irfana Luthfan Irfana Luthfan Irfana M. Raffi Rayandhika Melinia Falestin Moch Ikkbal Aditya Kasmaran Mohamad Rafi Mohamad Rafi Mohamad Rafi Muhamad Insanu Mujahidah, Ummahatul Nafisa Muthia Wafa Nanik Siti Aminah Nasution, Lise Meitner Aribah Nazhifah, Athiq Nengsih, Nunuk Kurniati Ningtias, Widya Sekar Ayu Nunuk Kurniati Nengsih Priandanda, Rafi Chandra Pujiyati Pujiyati Pujiyati, Purnomo, Tsania Firqin Purwantinigsih Sugita Purwantiningsih Sugita Purwantiningsih Sugita Rahayu, Dyah Utami Cahyaning Rahmah, Lutfita Anisa Rahmani, Nabiila Reza Auliatifani Risda Fardilya Nihayah Sagraha, Ghiffari Kenang Sandra Arifin Aziz Septaningsih, Dewi Anggraini Setyanto Tri Wahyudi Siti Sadiah Taopik Ridwan Tsania Firqin Purnomo Utami Dyah Syafitri Wina Yulianti Wisnu Ananta Kusuma Wulansari, Laela Yulianti, Dwi Indah