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All Journal Journal Of Research and Education Chemistry (JREC)
Vivi Sisca
STKIP YPM Bangko
Chemical Engineering, Chemistry & Bioengineering Chemistry Education

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ANALISIS VITAMIN C PADA BUAH JERUK PASAMAN UNTUK MENINGKATKAN IMUNITAS TUBUH PADA MASA PANDEMI : ANALISIS VITAMIN C Jumriana Rahayuningsih; Vivi Sisca; Eliyarti Eliyarti
Journal of Research and Education Chemistry Vol. 4 No. 1 (2022): APRIL
Publisher : UIR Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (221.042 KB) | DOI: 10.25299/jrec.2022.vol4(1).9363

Abstract

Vitamin C is the best antioxidant known to have benefits to boost immunity. One of the fruits that contain vitamin C is the Pasaman orange. Pasaman orange is a fruit that is a flowering plant with members of the Citrus clan from the Rutaceae tribe (orange-orange tribe). Pasaman oranges were analyzed for their vitamin C content in order to increase the community's immunity during the covid-19 pandemic. The method used is a laboratory experiment with the iodometric method. The result is that Pasaman oranges contain high levels of vitamin C, with the average vitamin C levels in the Pasaman oranges being 10.22%, 11.18% and 10.38% respectively, while the average vitamin C levels in the Pasaman oranges were 10.59%. And during this pandemic, we should consume a lot of food and fruit with vitamin C to increase the body's immunity, so that it can be developed to the next stage of further and more effective research.
Pembuatan Limbah Cangkang Telur Sebagai Katalis Heterogen untuk produksi Biodisel Vivi Sisca; Jumriana Rahayunigsih
Journal of Research and Education Chemistry Vol. 4 No. 2 (2022): OKTOBER
Publisher : UIR Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25299/jrec.2022.vol4(2).10862

Abstract

Limbah cangkang telur digunakan sebagai bahan baku untuk pembuatan katalis heterogen dalam produksi biodiesel. Sebelum digunakan, kandungan kalsium karbonat (CaCO3) dalam limbah cangkang telur dikonversi ke kalsium oksida (CaO) dengan kalsinasi pada 200-1000°C untuk 2jam. Sifat fisikokimia katalis oksida padat dianalisis menggunakan difraksi sinar-X (XRD). Aktivitas katalitik dari katalis dalam transesterifikasi minyak sayur dengan metanol dievaluasi. Pengaruh waktu reaksi, suhu reaksi, rasio molar metanol:minyak, jumlah katalis, juga diselidiki. limbah cangkang telur adalah sumber daya hayati untuk produksi katalis basa heterogen yang berhasil dimanfaatkan untuk sintesis biodiesel dengan kemurnian tinggi, hemat biaya dan ramah lingkungan.
Co-Authors Eliyarti Eliyarti Jumriana Rahayunigsih Jumriana Rahayuningsih