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All Journal CHEMICA Jurnal Teknik Kimia Dharma Raflesia : Jurnal Ilmiah Pengembangan dan Penerapan IPTEKS Indonesian Journal of Community Empowerment and Service Rafflesia Journal of Natural and Applied Sciences (RJNAS)
Devi Ratnawati
Universitas Bengkulu
Agriculture, Biological Sciences & Forestry Humanities Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Education Energy Materials Science & Nanotechnology Medicine & Pharmacology Public Health Social Sciences Other

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PEMBUATAN VIRGIN COCONUT OIL (VCO) DENGAN METODE TANPA PEMANASAN SEBAGAI UPAYA MENINGKATKAN KESEHATAN MASYARAKAT Teja Dwi Sutanto; Agus Martono HP; Devi Ratnawati
DHARMA RAFLESIA Vol 15, No 1 (2017): JUNI
Publisher : Universitas Bengkulu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33369/dr.v15i1.4235

Abstract

The aim of this activity was  to training the manufacture of virgin coconut oil (VCO) with a without heating method to the community, especially the mother-housewife, resident of RT 12, Pematang Gubernur, Muara Bangkahulu, Bengkulu. As for the specific targets to be achieved in this activity was for the women, especially mothers, resident of RT 12 has the ability to produce VCO at least for their family, so that can improve the health and well-being of their family. The method used in achieving this goal was by lecture, discussion and practice of making VCO so that these activities target communities to be better understand the method of making VCO and can practice it theirself at home respectively  Keywords: Virgin Coconut Oil, without heating method, public health 
Pengolahan Limbah Pasca Panen Menjadi Pupuk Organik Cair dan Kompos pada Kelompok Tani Akur Kabupaten Rejang Lebong Ria Nurwidiyani; Deni Agus Triawan; Ghufira Ghufira; Devi Ratnawati
DHARMA RAFLESIA Vol 19, No 2 (2021): DESEMBER (ACCREDITED SINTA 5)
Publisher : Universitas Bengkulu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33369/dr.v19i2.17814

Abstract

Kegiatan pengabdian kepada masyarakat ini bertujuan untuk menyebarluaskan pengetahuan kepada masyarakat dalam memanfaatkan limbah pasca panen sayuran menjadi pupuk organik cair dan kompos melalui pengoptimalan teknologi pengomposan menggunakan air cucian beras sebagai media bakteri. Kegiatan diawali dengan penyampaian informasi terkait proses pembuatan komposter bakteri dengan menggunakan air cucian beras, dilanjutkan dengan praktik pengolahan limbah pasca panen menjadi pupuk organik cair dan kompos serta pengaplikasian pupuk organik cair dan kompos pada tanaman. Bedasarkan hasil evaluasi awal diketahui sebanyak 86% peserta (anggota Kelompok Tani Akur Dusun Curup Kabupaten Rejang Lebong) masih belum mengetahui teknologi pengomposan limbah pasca panen, 14% peserta cukup mengetahui, dan 0% peserta sangat mengetahui. Setelah dilakukan pembinaan dan dilakukan evaluasi akhir diperoleh informasi bahwa seluruh peserta (100%) telah memahami teknologi pengomposan limbah pasca panen menggunakan komposter air cuian beras. Berdasarkan hal tersebut dapat disimpulkan bahwa kegiatan ini telah meningkatkan pengetahuan dan keterampilan peserta dalam mengolah limbah pasca panen sayuran menjadi pupuk organik cair dan kompos.
Green Synthesis of Sulfonated Activated Carbon from Palm Kernel Shell as Potential Catalyst for Hydrolysis of Palm Bunch Cellulose Totok Eka Suharto; Cindy Wulandari; Dwita Oktiarni; Devi Ratnawati; Ibdal Satar
CHEMICA: Jurnal Teknik Kimia Vol 9, No 2 (2022): August 2022
Publisher : Universitas Ahmad Dahlan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26555/chemica.v9i2.24511

Abstract

Sulfonated activated carbon (SAC) is one of green catalysts that has been successfully synthesized from palm shell waste. The SAC catalysts have been tested in the hydrolysis of cellulose of palm bunch to simple sugar. The SAC catalysts were prepared from palm shell waste by converting to activated carbon followed by sulfonating step. The SAC catalysts were characterized by using XRD, SEM, FTIR and gravimetric methods. The SAC catalysts show as porous amorphous materials and have acidic properties, a prerequisite for good catalytic activity. Preliminary catalytic tests showed that the SAC catalysts can be used for the hydrolysis of cellulose from palm bunch waste that was shown by the existence of reducing sugar in the liquid product of hydrolysis.
Pembuatan Virgin Coconut Oil (VCO) Dengan Metode Enzimatis Dan Fermentasi Teja Dwi Dwi Sutanto; Devi Ratnawati; Agus Martono HP
Indonesian Journal of Community Empowerment and Service (ICOMES) Vol. 1 No. 1: December 2021
Publisher : UNIB Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (481.665 KB) | DOI: 10.33369/icomes.v1i1.18978

Abstract

Virgin coconut oil (VCO) is coconut oil that contains medium chain fatty acids (MCFA) which are easily broken down by the body in very high amounts. Besides that, VCO also has very high antioxidant content such as tocopherol and beta-carotene. This PPM activity aims to provide VCO Making Training with the Enzymatic Method with pineapple fruit extract and fermentation with baker's yeast in the community of RT 12 RW 03 Pematang Governor Village, Muara Bangkahulu District, Bengkulu City. The activity began with a lecture followed by a discussion and practice of making VCO with enzymatic and fermentation methods. The results of observations in the field indicate that the target community of this PPM activity is very enthusiastic to take part in this activity because they feel they have gained additional new knowledge about how to make VCO which can complement their knowledge of the known VCO making technique, namely the fishing method. With the knowledge of making VCO taught in this activity, the target community will be able to have alternative methods for making VCO other than what has been known so far with easily obtained equipment. Keywords:   VCO; MCFA; antivirus; enzymatic; Fermentation 
The effectiveness test of sunscreen cream with raw materials of coconut oil and active ingredients of Soursop (Annona Muricata L) leaf and Bay (Eugenia Polyantha Wight) leaf ethanol extracts Eni Widiyati; Devi Ratnawati; Dyah Fitriani; Lesta Nurul Jayanti; Nadia Arum Pangestu
RAFFLESIA JOURNAL OF NATURAL AND APPLIED SCIENCES Vol. 2 No. 1 (2022): April
Publisher : UNIB Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33369/rjna.v2i1.22764

Abstract

The purpose of this study was to determine the effectiveness of cream made  of coconut oil as a raw  material and the active ingredients of soursop leaf ethanol extract  and bay leaf ethanol extract as sunscreens. The cream was made by mixing the hot (700C) water phase (glycerin, distilled water, methyl paraben, and triethanolamine = TEA) and the hot (700C) oil phase (s tearic acid, coconut oil, cetyl alcohol, propyl paraben, andlanolin). After the cream was formed, the active ingredients of soursop leaf ethanol extract and bay leaf ethanol  extract were added. A cream without an active ingredient was also made as a comparison.  The produced cream was determined to have ultraviolet (UV) radiation absorption by using a UV spectrophotometer. The resulting absorbance value was used to calculate the value of the sun protection factor (SPF) using the Mansur equation. The results showed that creams without active ingredients had the lowest SPF values. With an SPF of 3.048, the cream with 2% active ingredients and 2.5% bay leaf extract was labeled as a low-performance sunscreen cream
Penentuan Adanya Flavonoid, Uji Efektivitas Tabir Surya Ekstrak dan Krim Berbahan Aktif Ekstrak Etanol Daun Jambu Biji (Psidium guajava, Linn) dan Benzofenon-3 Eni Widiyati; Devi Ratnawati; Dyah Fitriani; Fadilah Sari
RAFFLESIA JOURNAL OF NATURAL AND APPLIED SCIENCES Vol. 3 No. 1 (2023): April
Publisher : UNIB Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33369/rjna.v3i1.28575

Abstract

ABSTRAK: Tujuan dari penelitian ini adalah menentukan adanya kandungan flavonoid pada daun jambu biji (Psidium guajava Linn), menguji efektivitas ekstrak dan krim tabir surya berbahan aktif ekstrak etanol daun jambu biji dan benzofenon-3. Daun jambu biji ditentukan adanya kandungan flavonoid menggunakan pereaksi Shinoda (Mg dan HCl pekat). Ekstrak daun jambu biji dibuat dengan cara maserasi menggunakan pelarut etanol teknis. Efektivitas ekstrak sebagai tabir surya ditentukan dengan menghitung nilai SPF ekstrak. Ekstrak yang dihasilkan dipergunakan sebagai bahan aktif pada pembuatan krim kosmetik dengan metode emulsifikasi. Krim yang dihasilkan ditentukan sifat-sifatnya seperti pH, serapan radiasi UV, nilai SPF dan efektivitas krim. Hasil penelitian menunjukkan bahwa daun jambu biji positif mengandung flavonoid. Ekstrak daun jambu biji (konsentrasi ekstrak 200 ppm) memiliki nilai SPF sebesar 6,765 (termasuk tabir surya efektivitas rendah), dan berpotensi sebagai bahan aktif tabir surya. Krim tabir surya berbahan aktif ekstrak daun jambu biji 0,5% memiliki nilai SPF sebesar 0,1648. Jika konsentrasi ekstrak ditingkatkan menjadi 1% maka nilai SPF juga meningkat menjadi 0,4249. Menurut standar FDA, kedua krim tersebut belum memiliki aktivitas sebagai tabir surya. Penambahan 1% benzofenon-3 ke dalam krim berbahan aktif ekstrak daun jambu biji 0,5%, akan meningkatkan nilai SPF (SPF = 5,5858), sehingga krim tabir surya menjadi lebih efektif dalam melindungi kulit dari paparan radiasi ultraviolet (UV).
Co-Authors Agus Martono HP Cindy Wulandari Dwita Oktiarni Dyah Fitriani Eni Widiyati Fadilah Sari Ghufira Ghufira Ibdal Satar Lesta Nurul Jayanti Nadia Arum Pangestu Ria Nurwidiyani Teja Dwi Dwi Sutanto Teja Dwi Sutanto Totok Eka Suharto Triawan, Deni Agus