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All Journal Journal of Tropical Life Science : International Journal of Theoretical, Experimental, and Applied Life Sciences Biota: Jurnal Ilmiah Ilmu-Ilmu Hayati Syntax Literate: Jurnal Ilmiah Indonesia
Lusini, Yuyun
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Agriculture, Biological Sciences & Forestry Humanities Biochemistry, Genetics & Molecular Biology Education Environmental Science Law, Crime, Criminology & Criminal Justice Social Sciences Other

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Karakterisasi, Pengaruh Sumber Nitrogen dan Karbon terhadap Produktivitas Enzim Lipase Rhizopus microsporus var oligosporus UICC 550 Mangunwardoyo, Wibowo; Lusini, Yuyun; Gandjar, Indrawati
Biota : Jurnal Ilmiah Ilmu-Ilmu Hayati Vol 14, No 2 (2009): June 2009
Publisher : Universitas Atma Jaya Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (166.947 KB) | DOI: 10.24002/biota.v14i2.2689

Abstract

Effect of nitrogen and carbon source on the production of extracellular lipase by R.microsporus var. oligosporus UICC 550 was studied. The enzyme activity was alsocharacterized in terms of temperature, pH, stability at room temperature, and effectof divalent ion. The amount of 2.5% (w/v) of olive oil as carbon sources and 5% (w/v)peptone as nitrogen sources were the optimum for production of lipase enzyme.Partial purifications using ammonium sulfate followed by dialysis showed that at pH6.5 and temperature 35oC was the optimum condition, respectively. The stability(remaining up to 80% of the optimum enzyme) was recorded at pH 6.5 after 24 hoursincubation at room temperature. The optimum activity remained 40% of the after onehour incubation at 35oC. Divalent ions concentration at 1 mM, Zn2+, Cu2+, Mg2+ andFe2+ inhibited the lipolytic activity.
Fruit Nutrients of Five Species of Wild Raspberries (Rubus spp.) from Indonesian Mountain’s Forests Surya, Muhammad Imam; Suhartati, Siti; Ismaini, Lily; Lusini, Yuyun; Destri, Destri; Anggraeni, Dian; Normasiwi, Suluh; Asni, Nurul; Sidiq, Mirwan Abu Bakar
Journal of Tropical Life Science Vol 8, No 1 (2018)
Publisher : Journal of Tropical Life Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (709.404 KB) | DOI: 10.11594/jtls.08.01.13

Abstract

Rubus spp. (wild raspberries) is one of genera belongs to Rosaceae, also distributed in the mountain forest of Indonesia. It has a high potency to be cultivated plant. Although, some of the potential of Rubus has already known, information of about fruit nutrients of species that distribute in the mountain forest of Indonesia are not known yet. This study was aimed to determine the fruit nutrients of five species of wild raspberries that was collected in Cibodas Botanical Garden. The results of our experiments demonstrate that the fruits nutrients contents varied among five species of wild raspberries from Indonesian mountain's forests. Rubus fraxinifolius has the highest content of sugar (5.05 g sugar per 100 g fruits) compared to Rubus rosifolius, Rubus chrysophyllus, Rubus lineatus and raspberry. During the ripening and ripe period, there were a different value of vitamin C and iron contents. The highest vitamin C of R. fraxinifolius (83.65 mg/100 gram) on the ripening fruit stage II. On the other hand, the highest vitamin C of R. rosifolius (54.30 mg/100 gram) found on the stage of ripe fruit.
Pati Resisten dari Beras Patah dengan Metode Autoclaving-Cooling Dua Siklus Hasanah, Ulfah Mariatul; Arif, Dede Zainal; Lusini, Yuyun; Sidiq, Mirwan Abu Bakar; Bonita, Yorike
Syntax Literate Jurnal Ilmiah Indonesia
Publisher : Syntax Corporation

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36418/syntax-literate.v9i3.15417

Abstract

Pati resisten adalah jenis pati yang resisten terhadap enzim amilase dalam pencernaan manusia. Pengolahan pati resisten dengan metode autoklaf-pendinginan dapat mengurangi sisa produk sampingan. Namun, proses retrogradasi selama pendinginan membutuhkan waktu lama. Selain itu, penggunaan beras pecah masih sangat terbatas karena kualitas pati yang lebih rendah dibandingkan dengan beras utuh. Oleh karena itu, diperlukan analisis pengaruh suhu dan waktu retrogradasi terhadap produksi pati resisten dari beras pecah, untuk mengetahui pengaruh suhu dan waktu retrogradasi terhadap kandungan pati resisten beras pecah. Retrogradasi dilakukan pada berbagai suhu 4°C, -10°C, dan -20°C dengan waktu retrogradasi 18 dan 24 jam dan diproses menggunakan Randomized Block Design (RBD) faktorial. Hasil penelitian menunjukkan bahwa suhu dan waktu retrogradasi berpengaruh signifikan terhadap kandungan pati resisten pada beras pecah dengan kandungan pati resisten tertinggi ditemukan pada sampel a1b2.
Co-Authors Anak Agung Gede Sugianthara Arif, Dede Zainal Bonita, Yorike Destri Destri, Destri Hasanah, Ulfah Mariatul INDRAWATI GANDJAR Lily Ismaini Muhammad Imam Surya Nurul Asni, Nurul Sidiq, Mirwan Abu Bakar Siti Suhartati, Siti suluh normasiwi, suluh WIBOWO MANGUNWARDOYO