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All Journal Jurnal Penelitian Saintek INOTEKS : Jurnal Inovasi Ilmu Pengetahuan, Teknologi, dan Seni
Yuriani Yuriani
Universitas Negeri Yogyakarta
Arts Humanities Computer Science & IT Decision Sciences, Operations Research & Management

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EFFECT OF SODIUM BISULFIT CONCENTRATION TO VITAMIN C RESIDENCE, TOTAL RESIDUAL SULFITE AND CONSUMER EQUIPMENT LEVEL ON HAIR SIRUP Nani Ratnaningsih; Yuriani Yuriani
Jurnal Penelitian Saintek Vol 10, No 2: Oktober 2005
Publisher : Institute of Research and Community Services, Universitas Negeri Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (8026.719 KB) | DOI: 10.21831/jps.v10i2.5473

Abstract

Effect of concentration of sodium bisulfite to vitamin C content, totalsulfite residue and consumer hedonic level of rambutan syrup has been studied. Research method was experiment by complete random design. Vitamin C content was analyzed by the iodium titration, the total sulfite  residue by  distillation analysis  (Rangana, 1977),  and consumer hedonic  level  by  hedonic scale  test  with  80  untrained panelists. Analysis data was done by analysis variance at 5% level of significance and continued with the Tukey test. Based on research result showed that concentration of sodium bisulfite have a significant effect to   vitamin C content and total sulfite residue of rambutan syrup. Vitamin C content and total sulfite residue increased with the increasing concentration of sodium bisulfite. Concentration of sodium bisulfite has a significant effect to aroma of rambutan syrup, otherwise no influence at color andflavor.
PENINGKATAN KOMPETENSI SISWA SEKOLAH MENENGAH KEJURUAN MELALUI PENERAPAN PEMBELAJARAN KETERAMPILAN WIRAUSAHA BIDANG BOGA SEBAGAI BEKAL KECAKAPAN HIDUP (LIFE SKILL) Marwanti Marwanti; Yuriani Yuriani; Prihastuti Ekawatiningsih
INOTEKS : Jurnal Inovasi Ilmu Pengetahuan, Teknologi, dan Seni Vol 13, No 2 (2009): Volume 13, Nomor 2, Agustus 2009
Publisher : LPPM UNY

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21831/ino.v13i2.5137

Abstract

This civil serving program was aimed to give live skills basedentrepreneurship as an alrernative asset for vocational school students,especially for vocational school number I at Depok Sleman. The students,majoring in food and beverage, was expected to have knowledge and live skills which was needed to enter the work World, whether it was a privateBusiness or working in product or service company with a deserve salary.  Fifteen student and five teachers from vocational schools number IDepok Sleman Yogyakarta followed the program. The teaching method,which was used for the program, was speech and answering a question,demonstration and practice, and industrial survey. The practice programwas done trice by making six kinds of food and industrial survey in twoprospective food companies at Yogyakarta.  The result of the civil serving program is very satisfying. It can beseen by the absence and the followers anthusiasm. The practice results arewell and maximum, the taste of the foods are good. Industrial Survey,which has never been done befote, is an interesting and exciting learningsituation. Keywords: entrepreneurship, live skills, and vocational school
Co-Authors Marwanti Marwanti Nani Ratnaningsih Prihastuti Ekawatiningsih