Hedyotis corymbosa is locally known as rumput mutiara from the Rubiaceae family, widely distributed in tropical regions of Asia. Researchers provided scientific evidences the beneficial impact of this plant for pharmacologic alactivity. This study aimed to isolate and evaluate the bioactive constituents based on their biological activities. In this study, the whole plant of H. corymbosa was extracted using methanol. Extract of H. corymbosa was sequentially partitioned using ethyl acetate and n-butanol. The ethyl acetate layer was further fractionated and isolated using chromatographic techniques to obtain the pure compounds. The bioactive compounds structure was determined using spectroscopic analysis especially the Nuclear Magnetic Resonance (NMR). The investigation of H. corymbosa resulted in the isolation of eight compounds, were identified as ursolic acid, 3βhydroxyolean-11-en-28,13β-olide, β-sitosterol, stigmastane-3,6-dione, ferulic acid, scopoletin, 2-hydroxy-1-methoxyanthraquinone, 3-hydroxy-1,2-dimethoxyanthraquinone. The antimicrobial effect of the crude extract, partitions and fractions were evaluated using agar well diffusion for antimicrobial susceptibility test and for the pure compounds were evaluated using minimum inhibitory concentration. The ethyl acetate layer and crude extract displayed the higher antimicrobial activities than nbutanol and water layer. The Minimum Inhibitory Concentration (MIC) for the pure compound was shown that most of the compounds have the ability to inhibit human pathogenic bacteria with average 100 µg/mL. The antimicrobial activities showed by the crude extracts, fractions, and pure compounds of H. corymbosa can be used as a commercial product for antimicrobial agent against S. aureus, S. enterica, E. coli and B. substilis.
ABSTRAKKegiatan pengabdian ini bertujuan untuk meningkatkan kapasitas produksi sehingga keberlangsungan produksi berlangsung secara kontinu, meningkatkan pengetahuan dan keterampilan para mitra terkait penerapan teknologi proses untuk menghasilkan minyak goreng kelapa yang berkualitas. Mitra kegiatan pengabdian ini adalah para pembuat atau pengolah dan penjual minyak goreng kelapa yang ada di Dusun bilatepung Desa Beleka Kecamatan Gerung Kabupaten Lombok Barat. Metode kegiatan yang digunakan adalah metode PRA (Partisipatory Rural Appraisal). Kegiatan pengabdian ini dilakukan dengan beberapa tahapan kegiatan diantaranya : (1) Koordinasi dan sosialisasi kegiatan, (2) Pelaksanaan kegiatan ini berupa penyuluhan dan pelatihan pengolahan minyak goreng kelapa serta alih teknologi penggunaan mesin parut portable mini, (3) Monitoring dan evaluasi. Hasil kegiatan penggabdian ini menunjukkan bahwa adanya peningkatan pengetahuan mitra terkait penerapan teknologi proses, peningkatan keterampilan mitra dalam mengoperasikan mesin parut kelapa mini portable sehingga meningkatkan kapasitas produksi minyak goreng kelapa yang dihasilkan. Diharapkan kegiatan ini masih bisa dilaksanakan secara kontinu terutama untuk kegiatan pelatihan pengolahan limbah menjadi beberapa produk pangan yang inovatif. Kata kunci: teknologi proses; minyak goreng kelapa ABSTRACTThis service activity aims to increase production capacity so that production continuity takes place continuously and increase the knowledge and skills of partners regarding the application of process technology to produce quality coconut cooking oil. The partners of this service activity are the makers or processors and sellers of coconut cooking oil in Bilatepung Hamlet, Gerung District, and West Lombok Regency. The activity method used is the PRA (Participatory Rural Appraisal) method. This service activity is carried out in several stages of activity including: (1) Coordination and socialization of activities. (2) Implementation of this activity includes counseling and training on coconut cooking oil processing and technology transfer using mini portable grating machines. (3) Monitoring and evaluation. The results of this service activity indicate an increase in partner knowledge regarding the application of process technology and partner skills in operating a mini portable coconut grater machine to increase the production capacity of the produced coconut cooking oil. Hopefully, this activity can still be carried out continuously, especially for training activities on waste processing into several innovative food products. Keywords: process technology; coconut cooking oil
Microalgae-based researches are one of the interesting topics to date due to its wide applications for commercial industries. One of the vital issues that remain in the production of large-scale microalgae is the harvesting process of microalgae culture. There are several techniques that can be used in harvesting microalgae and each algae will be showing a different result. In this research, the microalgae Haematococcus pluvialis were harvested using flocculation-filtration method. Alum in different dosages, range from 0.25-2 g/L, was used as flocculants and the mixing duration was investigated to seek out the best harvesting efficiency. Based on the research, it can be concluded that the optimum flocculation process was alum addition of 1 g/L culture that continuously stirring for 5 minutes long. In which the flocculation efficiency reaches 94.5%.
The aim of this research was to determine the effect of pre-treatment on corn husks as primary packaging for kerake quality during storage. The design used in this research was Completely Randomized Design (CRD) with a single factor i.e. pretreatment consisted of K1 (drying), K2 (combination of steaming and drying), K3 (heating with irons), K4 (sterilization by autoclave), and K5 (oven) and it was repeated three times. Data were analyzed using Co-Stat software with 5% significance differences. The treatments that were significantly different were then analyzed using Honestly Significance Difference (HSD). The results showed that pretreatment of the corn husks as primary packaging was not significantly different on moisture content, fat content, taste, and texture kerake during storage. But were significantly different on flavor kerake. Steaming and drying treatment was able to decrease the growth of total fungi to <1.0 x 102 CFU/gr during 14 days of storage, which means total fungi were still accepted according to SNI (maximum 1.0 x 102 CFU/gr). Steaming and drying treatment also produced kerake with flavor, texture, and aroma that is preferred by panelists.
Abstrak: Kelor adalah salah satu jenis sayuran yang sangat kaya akan nutrisi, terutama protein, vitamin A, vitamin C dan kalsium. Kelor juga mengandung senyawa bioaktif seperti polifenol yang dapat berfungsi sebagai antioksidan alami, sehingga sangat baik diberikan kepada anak sebagai tambahan dalam menu makanannya untuk mengoptimalkan tumbuh kembangnya. Kegiatan pengabdian ini bertujuan untuk memberi edukasi dan tambahan ilmu pengetahuan kepada orang ibu – ibu rumah tangga di Desa Selat, Kecamatan Narmada, Kabupaten Lombok Barat khususnya yang memiliki balita. Peserta kegiatan ini berasal dari ibu – ibu warga Desa Selat yang memiliki balita, kader posyandu yang mewakili setiap Dusun yang ada berjumlah 12 0rang. Kegiatan dilakukan dalam beberapa tahapan, yaitu : 1). Sosialisasi persiapan kegiatan 2). Pre-test 3). Penyampaian materi tentang pemanfaatan daun kelor sebagai bahan alternative mencegah gizi buruk dan stunting 4). Post-test untuk mengevaluasi daya serap dan pengetahuan peserta. Hasil penyuluhan menunjukkan bahwa terjadi peningkatan pengetahuan ibu-ibu peserta sebesar 67,80% (selisih nilai 20,40%) dari nilai sebelum penyampaian materi hanya sebesar 47,40%. Hasil penyuluhan ini diharapkan dapat menjadi tambahan ilmu pengetahuan bagi ibu-ibu peserta dalam hal pemanfaatan daun kelor sebagai alternatif pencegahan gizi buruk dan stunting pada anak balitanya.Abstract: Moringa is a very rich type of vegetable in nutrients, especially protein, vitamin A, vitamin C, and calcium. Moringa also contains bioactive compounds such as polyphenols that can function as natural antioxidants, so it is best given to children as an addition to their diet to optimize their growth and development. This service activity aims to provide education and additional knowledge to housewives, especially toddlers in Selat Village, Narmada District, West Lombok Regency. Participants in this activity came from 12 people Selat Village mothers who have toddlers and posyandu cadres representing each hamlet. Activities are carried out in several stages, namely: 1). Socialization of activity preparation 2). Pre-test 3). Counseling on the use of Moringa leaves as an alternative material to prevent malnutrition and stunting 4). Post-test to evaluate participants' absorption and knowledge. The counseling results showed an increase in the knowledge mother participants by 67.80% (20.40% difference in value) from the value before delivering the material, which was only 47.40%. The results of this counseling are expected to be additional knowledge for participating mothers in terms of using Moringa leaves as an alternative to preventing malnutrition and stunting in their children under five.
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