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All Journal Science and Technology Indonesia JPM (Jurnal Pemberdayaan Masyarakat) Walisongo Journal of Chemistry JKPK (Jurnal Kimia dan Pendidikan Kimia) Carmin: Journal of Community Service Molekul: Jurnal Ilmiah Kimia
Wathon, Muhammad Hizbul
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Humanities Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Economics, Econometrics & Finance Education Environmental Science Languange, Linguistic, Communication & Media Materials Science & Nanotechnology Physics Social Sciences Other

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pH-Sensitive Strips Based on Cellulose and Anthocyanins from Dried Java Plum Fruits (Syzygium cumini) Wathon, Muhammad Hizbul; Susilowati, Endang; Ariani, Sri Retno Dwi
JKPK (Jurnal Kimia dan Pendidikan Kimia) Vol 8, No 1 (2023): JKPK (Jurnal Kimia dan Pendidikan Kimia)
Publisher : Program Studi Pendidikan Kimia FKIP Universitas Sebelas Maret

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20961/jkpk.v8i1.72702

Abstract

This study aimed to develop pH-sensitive strips made of cellulose incorporated with anthocyanins extracted from dried Java plum fruits (Syzygium cumini) which potentially can be used to monitor food freshness. The spoilage of animal protein typically produces total volatile basic nitrogen (TVB-N), which can be easily detected using pH-sensitive indicators. pH-sensitive indicators can be developed by combining biopolymers and anthocyanins. Biopolymers were cellulose from Whatman filter paper. While anthocyanins in this study were extracted from dried Java plum fruits (Syzygium cumini) with acidified water (0.01% v/v HCl) followed by SPE. Anthocyanins were incorporated into Whatman filter paper and dried at 70 °C for 10 min. Cellulose incorporated with anthocyanins was analysed using FT-IR and tested for pH 7-10. LC-MS spectra showed cyanidin-3-O-glucoside (m/z 449.3), delphinidin-3-O-glucoside (m/z 465.3), and petunidin-3-O-glucoside (m/z 479.3). These anthocyanins were the products of the deglycosylation of anthocyanin diglycosides. The deglycosylation of anthocyanins takes place through two different routes in either hemiketal or quinonoid forms. Those proposed two pathways are through protonation on an oxygen atom connecting an aglycone and a sugar moiety or through protonation on an oxygen atom within a sugar ring moiety. UV-Vis studies showed the colour profiles of anthocyanins in buffer solutions pH 1-12. The λvis-max of flavylium at pH < 3 ranged from 515-524 nm. At pH 4 to 6, colourless hemiketal was observed. The λvis-max of the quinonoid base was 575 nm at pH 7 and 590-599 nm for quinonoid anion at pH > 8. In alkaline pH, chalcone was observed.
Ability Test of C-4-Methoxyphenyl-Calix[4]resorcinarene as An Inhibitor of Calcium Carbonate (CaCO3) Crust Growth at Various Concentration Utomo, Suryadi Budi; Ramadhani, Lathifah; Hanifah, Kisti Makrifatul; Huda, Zamira Zia’ul; Susanti V.H, Elfi; Ariani, Sri Retno Dwi; Mulyani, Sri; Wathon, Muhammad Hizbul
JKPK (Jurnal Kimia dan Pendidikan Kimia) Vol 8, No 2 (2023): JKPK (Jurnal Kimia dan Pendidikan Kimia)
Publisher : Program Studi Pendidikan Kimia FKIP Universitas Sebelas Maret

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20961/jkpk.v8i2.74326

Abstract

The primary objective of this study was to evaluate the capacity of C-4-methoxyphenyl-calix[4]resorcinarene in impeding the development of CaCO3 crust at varying concentrations of the inhibitor and different durations of contact. The research employed a seeded experimental approach using a 0.1 M CaCO3 growth solution maintained at 80 °C. The concentrations of C-4-methoxyphenyl-calix[4]resorcinarene introduced into the CaCO3 growth solution were 0, 5, 10, 20, and 40 ppm. The experimental procedure commenced with preparing crystal seeds, which is pivotal for gauging crystal growth rates. Results obtained from crystal weighing and morphological analysis through Scanning Electron Microscopy (SEM) indicated that C-4-methoxyphenyl-calix[4]resorcinarene effectively impeded the pace of CaCO3 scaling. The inhibitory efficacy of C-4-methoxyphenyl-calix[4]resorcinarene as a CaCO3 scaling inhibitor was contingent on well-regulated temperature during the heating phase. The inhibition effectiveness was positively correlated with the inhibitor's concentration; higher concentrations yielded superior suppression of CaCO3 scaling. Optimal scale reduction was observed at an inhibitor concentration of 10 ppm during a 20-minute contact period. These findings underscore the promising potential of C-4-methoxyphenyl-calix[4]resorcinarene as a viable inhibitor for mitigating scaling growth rates in various industrial fluid systems and related contexts.
Co-Authors Ari Syahidul Shidiq Bilhaq, Natiq Ciptonugroho, Wirawan Elfi Susanti V. H. Elfi Susanti Van Hayus Elfi Susanti VH Endang Susilowati Hanifah, Kisti Makrifatul Huda, Zamira Zia’ul Majid, Karima Mitsalina, Aufa Vib Ningtyas, Arin Ika Nugrahani, Arumsasi Putri Pramesti, Anastasia Diaz Rahmadina, Salsabila Adzani Ramadhani, Lathifah SARI, LATIFAH Setyowati, Widiastuti Agustina Eko Sri Mulyani Sri Retno Dwi Ariani Suryadi Budi Utomo Susanti V.H, Elfi Susanti VH1, Elfi Susilowati , Endang Zai, Fila Delfia