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All Journal Biotika: Jurnal Ilmiah Biologi Lantanida Journal jurnal syntax admiration
Ayuliansari, Yossy
Institut Teknologi Lombok, Indonesia
Aerospace Engineering Agriculture, Biological Sciences & Forestry Automotive Engineering Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Computer Science & IT Education Electrical & Electronics Engineering Engineering Immunology & microbiology Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Mathematics

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ANALISIS KANDUNGAN KAFEIN DALAM KOPI TRADISIONAL GAYO DAN KOPI LOMBOK MENGGUNAKAN HPLC DAN SPEKTROFOTOMETRI UV/VIS Fathia Rizqi Aprilia; Yossy Ayuliansari; Tikarahayu Putri; Muhammad Yudhistira Azis; Wisye Dewi Camelina; Mochammad Resya Putra
BIOTIKA Jurnal Ilmiah Biologi Vol 16, No 2 (2018): BIOTIKA DESEMBER 2018
Publisher : Universitas Padjadjaran

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24198/bjib.v16i2.19829

Abstract

Analisis Kadar Boraks pada Jajanan yang Dijual di SD Yang Tersebar di Desa Lenek Daya Nusa Tenggara Barat Yossy Ayuliansari; Lalu Junaidi Halki; Wiranda Utama; Samsul Rizal
Jurnal Syntax Admiration Vol. 5 No. 5 (2024): Jurnal Syntax Admiration
Publisher : Syntax Corporation Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.46799/jsa.v5i5.1140

Abstract

This research aims to analyze the levels of borax in snacks sold in primary schools (SD) scattered across Lenek Daya Village, West Nusa Tenggara. The sampling method was conducted using purposive sampling from all primary schools in the village, followed by qualitative analysis of borax using turmeric paper. Furthermore, samples indicated positive for containing borax were analyzed for their levels based on the alkalimetric titration method. The results showed that there were 3 samples indicated positive for containing borax, namely sample A1 with a borax level of 819.8 ppm; B1 at 1175 ppm, and sample D1 at 1360.2 ppm. These findings indicate the potential existence of food safety issues among primary school children in Lenek Daya Village. Therefore, steps to enhance supervision and control of food quality in the school environment need to be increased to ensure the safety of children's snack consumption.
KARAKTERISTIK MAKROALGA HIJAU Ulva lactuca ISOLAT PANTAI LOMBOK TIMUR: ANALISIS PROKSIMAT, SENYAWA BIOAKTIF, DAN POLISAKARIDA ULVAN Ayuliansari, Yossy; Murdiah, Murdiah; Hayati, Mir’atul; Aini, Diah Miftahul; Furqon, Baiq Repika Nurul
Lantanida Journal Vol 14 No 1 (2026): January-June 2026
Publisher : UIN AR-RANIRY

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22373/lj.v14i1.34635

Abstract

Ulva lactuca is a green macroalga with high potential as a source of sulfated polysaccharides and bioactive compounds; however, information on its ulvan characteristics from East Lombok waters remains limited. This study aimed to comprehensively characterize the chemical composition of Ulva lactuca collected from the coastal waters of East Lombok through proximate analysis, extraction and characterization of ulvan polysaccharides, and identification of bioactive compounds using gas chromatography–mass spectrometry (GC-MS). Proximate analysis revealed moisture content of 13.11%, protein 15.71%, lipid 0.04%, and crude fiber 45.03%, indicating a high fiber content and very low lipid level. Ulvan extraction using HCl resulted in a significantly higher yield (11.91%) compared to NaOH (3.10%) and higher sulfate content (33.75% vs 27.58%). GC-MS analysis of the methanolic extract identified various bioactive compounds predominantly belonging to fatty acids, with hexadecanoic acid (palmitic acid) as the major component, along with other compounds such as 9-octadecene, neophytadiene, and long-chain alcohol derivatives. These compounds are known to exhibit biological activities including antibacterial, anti-inflammatory, and antioxidant properties. Overall, the combination of proximate composition, ulvan content, and bioactive compound profile highlights the potential of Ulva lactuca from East Lombok as a promising source of functional food ingredients and natural bioactive substances.
Co-Authors Diah Miftahul Aini Fathia Rizqi Aprilia Furqon, Baiq Repika nurul Hayati, Mir’atul Lalu Junaidi Halki Mochammad Resya Putra Muhammad Yudhistira Azis, Muhammad Yudhistira murdiah, murdiah Samsul Rizal Tikarahayu Putri Wiranda Utama Wisye Dewi Camelina