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All Journal Jurnal Teknologi Dan Industri Pangan Catha Saintifica
Mukhamad Fauzi
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Agriculture, Biological Sciences & Forestry Civil Engineering, Building, Construction & Architecture Computer Science & IT Education Energy Industrial & Manufacturing Engineering

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effect of ascorbic acid on gel formation of myofibril from big eye scad fish (Selar crumenophthalnus) Achmad Subagio; Wiwik siti Windrati; Mukhamad Fauzi; Yuli Witono
Jurnal Teknologi dan Industri Pangan Vol. 16 No. 2 (2005): Jurnal Teknologi dan Industri Pangan
Publisher : Departemen Ilmu dan Teknologi Pangan, IPB Indonesia bekerjasama dengan PATPI

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (342.377 KB)

Abstract

Effect of ascorbic acid on gel formation of myofibril from big eye scad fish (Selar crumenophthalnus)were studied for its development as food ingredient. Myofibril was galled by the addition of various concentrations of ascorbic acid (0, 0.1, 0.2, 0.3 and 0.4%) and the gels were then characterized for its cooking loss, of the gel, but at 0.4% the cooking loss of gel increased significantly. Accordingly, the WHC of the gel changed insignificantly with the ascorbic acid addition below 0.3%, and decrease sharply in the addition of 0.4%. Gel textures were affected by the addition of ascorbic acid at all levels, namely 29.9 ± 1.9, 31.0 ± 0.3, 35.4 ± 0.4, 46.7 ± 1.5, and 115.7 ± 3.2 g/7 mm for 0, 0.1, 0.2, 0.3 and 0.4%, respectively. Sodium dodecyl sulfate – polyacrylamide gel electrophoresis (SDS-PAGE) showed that addition of ascorbic acid drove formation odfdisulphide bond in the myosin heavy chain (MHC) and other myofirillar proteins, resulting in the development of a strong three dimensions structure I myofibril gel as shown by microscopic structure. Key words : Ascorbic acid, Big eye Scad Fish (Selar crumenophthalnus), el formation myofibril
Extraction and Stability of Anthocyanins From Jambolan (SYZYGIUM CUMINI) Skins PuspitaSari .; Fitria Agustina; Mukhamad Komar; Unus .; Mukhamad Fauzi; Triana Lindriati
Jurnal Teknologi dan Industri Pangan Vol. 16 No. 2 (2005): Jurnal Teknologi dan Industri Pangan
Publisher : Departemen Ilmu dan Teknologi Pangan, IPB Indonesia bekerjasama dengan PATPI

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Anthocyanins were extracted from jambolan skins using neutral solvents e.i water, ethanol, sopropanol, water ; ethanol (1:1), water : isopropanol (1:1), ethanol : isopropanol (1:1), and water, ethanol, isoppropanol (1:1:1) at 5 and 270>C. the stability of the anthocyanins was as effected by pH, heat, oxidator, and light was investigated. The extraction using combination of water and isopropanol at 270C showed the highest total yield, i.e 71.54% (db). Furthermore, the highest anthocyanin concentration and yield were obtained in the extracts using combination of water and ethanol at 270>C i.e. 10 007.03 mg/L (db) and 2.78% (db), respectively. At low pH, the pigment extracts sowed high stability; and gradually decreased and lost color when the pH was increased. The greatest color intensity (red) was obtained at pHs values less than 3.5. The anthocyanins were relatively stable during heating temperature of 40 and 600C in which more than 80% of pigment could be maintained for 4 hour of heating. Heating at high temperatures (80 and 1000C) decreased the color stability more than 80%. Presence of oxidator H2O2 reduced the stability up to 73.52%. The UV and flouresecent light exposure for 7 days also reduced the stability by 11.47% and 10.62%, respectively. Key words: Anthocyanins, Jambolan skin, Extraction, pigment stability
Alat Pemintal Sabut Kelapa Berbasis Kecepatan Sefiyuchanna, S; Fauzi, Mukhamad; Jumini, Sri
CATHA SAINTIFICA Vol 3 No 2 (2025): November 2025 Article-in-Press
Publisher : Sentra Kekayaan Intelektual dan Inovasi Teknologi (INOTEK) Universitas Sains Al-Qur'an

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32699/3z89e971

Abstract

The accumulation of coconut fiber waste and limited spinning technology causes the rope production process to remain slow and have low economic value for small business owners. This study aims to design a coconut fiber spinning tool based on speed control and analyze the effect of electrical power on the rope length and rotations per minute (RPM) produced. The research method uses an experimental approach with stages of tool design, assembly, testing, and performance evaluation gradually following the waterfall flow. Tests were carried out with power variations of 30 W, 35 W, 40 W, and 45 W at a constant spinning time of 60 seconds, then the RPM value and the resulting rope length were measured. The results showed a directly proportional relationship between power, RPM, and rope length. At 30 W power, the RPM was obtained at 32 with a rope length of 1.72 meters, while at 45 W power, the RPM increased to 72 and the rope length reached 2.94 meters. Increasing power increases the dynamo rotation speed and the effectiveness of the winding process, so that production capacity increases at the same time. 
Co-Authors Achmad Subagio Fitria Agustina Mukhamad Komar PuspitaSari . Sefiyuchanna, S Sri Jumini Triana Lindriati Unus . Wiwik Siti Windrati Yuli Witono