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INDONESIA
BUANA SAINS
Published by Universitas Tribhuwana Tunggadewi
ISSN : 14121638     EISSN : 25275720     DOI : -
Core Subject : Science, Education,
Biochemistry, Genetics & Molecular Biology Chemistry Mathematics Physics
BUANA SAINS p-ISSN : 1412-1638 | e-ISSN: 2527-5720 is a double-blind peer-reviewed, open-access journal, published by UNITRI PRESS. It publishes original and applied research in all areas of natural science. The Editorial goal is to provide a forum exchange and an interface between researchers and practitioners in any natural science related field.
Arjuna Subject : -
Articles 500 Documents
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VOLALITAS HARGA DAGING SAPI DI JAWA TIMUR PADA BULAN RAMADHAN Priyambodo, Ayu Wulandari; Rinanti, Rosyida Fajri; Trianawati, Anis; Aviolita P. P, Aviva
BUANA SAINS Vol 23, No 3 (2023)
Publisher : Universitas Tribhuwana Tunggadewi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33366/bs.v23i3.5463

Abstract

This study aimed to investigate how the price of beef in East Java is affected by Ramadan. This study used ARCH/GARCH model to determine the correlation. The impact of Ramadan on the price beef in East Java is then examined, along with the effect of price fluctuations and price volatility, using the GARCH model. The results showed that price volatility affects variations in beef prices. Then, the GARCH (1,1) model estimation findings demonstrate that the volatility from the prior period and yesterday's variation in East Java have impacted changes in beef prices.
PENGGUNAAN JERAMI BUNGA SEDAP MALAM TERFERMENTASI DALAM COMPLETE FEED TERHADAP PERFORMA DOMBA LOKAL Suryanto, Dedi; Marthotillah, Achmad Bagus A.; Ali, Usman
BUANA SAINS Vol 23, No 3 (2023)
Publisher : Universitas Tribhuwana Tunggadewi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33366/bs.v23i3.5269

Abstract

This study aimed to assess the impact of fermented night-blooming jasmine straw (JBSMF) in complete feed on local sheep performance, including feed intake, weight gain, feed digestibility, and feed efficiency. Materials included male local sheep, rice bran, concentrate, pollard, corn stover, premix, and JBSMF. The research was conducted on KTHRI in Wagir Village, Sukun, Malang and used the randomized block design experiment featured four treatment, P0 = control feed, P1 = 10% dry JBSMF, P2 = 20% JBSMF, and P3 = 30% JBSMF in complete feed, each repeated three times. Observed variables encompassed sheep production performance: feed intake, weight gain, feed digestibility, and feed efficiency. Results indicated that JBSMF in complete feed had no significant impact on local sheep performance. The optimal treatment was 30% JBSMF inclusion. In conclusion, increasing fermented JBSMF in dry form in complete feed showed the potential to enhance local sheep performance and optimal use of 30 % of dry JBSMF .
RESPONS PERTUMBUHAN DAN PRODUKSI PADI HIBRIDA TERHADAP APLIKASI PUPUK ORGANIK CAIR LIDAH BUAYA DAN PUPUK ANORGANIK P wandansari, niken rani; Swandaru, Hendra; Cahya, Utik Tri Wulan
BUANA SAINS Vol 24, No 2 (2024)
Publisher : Universitas Tribhuwana Tunggadewi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33366/bs.v24i2.5975

Abstract

This research aimed to observe the growth and production response of the Inpari 32 hybrid rice variety to the application of aloe vera liquid organic fertilizer and inorganic P fertilizer compared to the absence of the combination of these two fertilizers. The research method used was comparative, comparing rice field plots treated with a combination of inorganic P fertilizer (Phonsgreen) at a dose of 150 kg/ha and aloe vera liquid organic fertilizer (P1) at a dose of 6 liters/ha with rice field plots without the combination of the two fertilizers (P0). Parameters observed included plant height, number of tillers, number of productive tillers, panicle length, number of grains per panicle, grain weight per clump, and weight of 1000 grains. The results showed that aloe vera liquid organic fertilizer and inorganic P fertilizer could increase milled dry grain production by up to 29.9%.
ANALISA DEBIT BANJIR MENGGUNAKAN METODE NAKAYASU DAN SCS (SOIL CONSEVATION SERVICES) SEBAGAI PENENTUAN TINGGI MUKA AIR DI SUNGAI SEMBAKUNG, KECAMATAN LUMBIS PANSIANGAN KABUPATEN NUNUKAN Sulistyani, Kiki Frida; Suhudi, Suhudi
BUANA SAINS Vol 24, No 1 (2024)
Publisher : Universitas Tribhuwana Tunggadewi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33366/bs.v24i1.6117

Abstract

This research aimed to estimate the magnitude of the flood discharge value in the Sembakung River using the Nakayasu Method and SCS (Soil Conservation Services) as a determination of water level. This study was located in the upstream Sembakung Watershed and divided into two sub-watersheds such as Labang 1 and Labang 2. The Calculation of flood discharge using the Nakayasu and SCS method was calibrated with the results of hydrometric measurements. Based on the results of hydrometric measurements, floods that often occur in the Labang Sub-watershed are at an altitude of +117 - +118 with a large discharge ranging from 633 - 828 m3 / sec. The maximum flood in the Labang sub-watershed was at an altitude of +120, with a discharge of 1,271 m3 / sec. The calculation result of the SCS method is 1,280 m3 / sec and the Nakayasu method is 3,310 m3 / sec. The closest measurement result is the SCS method. River profile calculation using HEC-RAS software, with flood discharge at Labang 1 location and downstream boundary in the form of flood discharge at Labang 2 location. The results of HEC-RAS modeling using flood discharge with a return period of 25 years in the Labang 1 Sub-DAS obtained a water level elevation of +120.89. While the results of modeling with flood discharge with a return period of 50 years are at an altitude of +122.71.
PERKECAMBAHAN BIJI ROTAN (Calamus caesius BLUME) DENGAN PERENDAMAN DALAM AIR KELAPA DAN GIBERELIN (GA3) pardosi, immanuel kristian; Mukarlina, Mukarlina; Zakiah, Zulfa
BUANA SAINS Vol 24, No 1 (2024)
Publisher : Universitas Tribhuwana Tunggadewi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33366/bs.v24i1.4223

Abstract

This study aims to determine the effect of coconut water and gibberellins on the germination of rattan seeds. The research design used was a completely randomized design with a factorial pattern consisting of 2 factors with 5 repetitions. The first factor (A) is coconut water consisting of control without coconut water 0% (A0), coconut water 25% (A1), coconut water 50% (A2), coconut water 75% (A3), and coconut water 100%(A4 ). The second factor is the concentration of gibberellins (GA3) consisting of control without gibberellins 0 ppm, 30 ppm (B1), 60 ppm (B2), and 90 ppm (B3). The results showed that coconut water and gibberellins had a significant effect on the percentage of germination, seedling height, number of roots, root length, and wet weight of rattan plants. A treatment combination of 75% coconut water and 90 ppm GA3 was the best treatment for the parameters of germination percentage (92,94%), seedling height (8,05cm), number of roots (4,06), root length (10,75cm), and wet weight rattan (5,04 grams).
PENGARUH PEMBERIAN BIOCHAR DAN PESTISIDA BERBAHAN CHITOSAN TERHADAP PERTUMBUHAN DAN HASIL TANAMAN BROKOLI (Brassica oleraceae var. Italica) Triana, Hesti; Alfian, Rizki; Damung, Yovita Mariana; Fikrinda, Wahyu
BUANA SAINS Vol 23, No 3 (2023)
Publisher : Universitas Tribhuwana Tunggadewi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33366/bs.v23i3.5621

Abstract

 This research aimed to determine the effect of applying biochar and chitosan-based pesticides on the growth and production of broccoli plants. This research used a factorial randomized block design. The first factor, namely biochar, consists of 4 (four) levels; B0: control, B1: 160 g/polybag, B2: 320 g/polybag, and B3: 480 g/polybag. The second factor, namely chitosan, consists of 3 (three) levels; C0: control, C1: 1.5 ml/l water, and C2: 3 ml/l water. Data analysis used analysis of variance (ANOVA) and further testing using BNT at the 5% level. The results showed that there was no interaction between giving biochar and chitosan on broccoli growth and yield parameters, but separately giving biochar had a significant effect on plant height, number of leaves, leaf area, flower diameter, flower weight, and production yield, chitosan treatment had a significant effect on plant height, number of leaves, leaf area, flowering age, flower diameter, flower weight, wet and dry weight of stover, and production yield. The best biochar treatment was at a dose of 480 g/polybag (B3) with a production yield of 12.69 t/ha compared to the control 11.49 t/ha and the best chitosan treatment was at a dose of 3 ml/l water (C2) with a production yield of 12 .82 t/ha compared to the control, namely 11.09 t/ha. The application of 160 g biochar/polybag + 3 ml chitosan/l showed that it was able to suppress the development of black rot disease with a disease incidence percentage of 0-8% compared to the control of 8-50% and a wound diameter on flowers of 0.00 cm compared to controls of 1.87 cm.
PEMANFAATAN PUPUK ORGANIK CAIR KULIT BAWANG MERAH PADA TANAMAN TERONG UNGU (Solanum melongena L). Sinu, Grasiana Tryfonia Dehot; Agastya, I Made Indra; Anggarbeni, Susilo Ribut; Indawan, Edyson; Hapsari, Ricky Indri
BUANA SAINS Vol 24, No 2 (2024)
Publisher : Universitas Tribhuwana Tunggadewi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33366/bs.v24i2.6158

Abstract

This research aims to determine the use of shallot skin liquid organic fertilizers on the growth of eggplant plants and determine the application of different doses to eggplant plants. The method used in this research used a factorial Randomized Block Design (RAK) with two factors where the first factor was eggplant variety M1: Mustang F1, M2 : LagunaF1, and the second factor was the dose of Liquid Organic Fertilizer (POC) shallot skin V0 : no POC shallot skins, V1 : 20 ml/L POC of shallot skins, V2 : 40 ml/L POC of shallot skins, V3 : 60 ml/L POC of shallot skins, V4 = 80 ml/L POC of shallot skins. The results showed that shallots skin POC on both varieties did not provide significant interaction. Shallots skin POC independently affected plant height and number of leaves, with the highest results in the V4 treatment with an average of 26.00 cm and 21.84 strands. While in the parameters of the result, the V4 treatment showed the highest results in fruit weight, namely 243.99 g. Onion skin POC can increase eggplant plant growth with the highest dose of 80 ml/L..
KANDUNGAN SENYAWA FITOKIMIA DAN VITAMIN E DARI DAUN DAN BATANG BAYAM BRASIL (Alternanthera sisso) Aryasa, Natali Allya Graciandi; Madyaningrana, Kukuh; -, Krismono
BUANA SAINS Vol 24, No 1 (2024)
Publisher : Universitas Tribhuwana Tunggadewi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33366/bs.v24i1.5241

Abstract

Brazilian spinach possesses untapped potential as an immunomodulator, containing beneficial flavonoids and vitamin E. This research aimed to explore the phytochemical and vitamin E content in Brazilian spinach leaves and stems, laying the foundation for its use as a food crop. The result showed that the leaves and stems of Brazilian spinach contain similar phytochemicals, including alkaloids, flavonoids, and tannins. Moreover, Brazilian spinach was shown to be a source of vitamin E, with Brazilian spinach leaf flour containing approximately 42.2914 mg of vitamin E per 100 grams and Brazilian spinach stem flour containing roughly 27.32095 mg of vitamin E per 100 grams. 
PENGGUNAAN KOMBINASI KADAR PROTEIN PAKAN DAN THREONIN TERHADAP PENAMPILAN PRODUKSI DAN KECERNAAN PAKAN PADA AYAM KAMPUNG UNGGUL Santoso, Erik Priyo; Fitasari, Eka; Togola, Veronika; Leuhapu, Robertus Aba
BUANA SAINS Vol 23, No 3 (2023)
Publisher : Universitas Tribhuwana Tunggadewi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33366/bs.v23i3.5671

Abstract

This research aimed to determine the effect of a combination of feed protein levels and threonine, namely feed formulations with crude protein (PK) levels of 19%, 18%, and 17% combined with the addition of the amino acid threonine 100%, 110%, and 120%. The research used a Completely Randomized Design Method repeated three times. The parameters measured in this study were production performance (feed consumption, body weight gain, FCR, feed efficiency) and digestibility (metabolic energy and N retention). The combination of feed PK and threonine content did not significantly affect all parameters (p0.05). Feed PK significantly affected feed consumption, FCR value, and N retention value. The results showed that the highest body weight gain was in 80-day-old chickens produced in the 18% PK treatment 1264.43 gr/head and decreased in the 17% CP treatment. The highest feed efficiency occurred in the PK 18% treatment at 34.99%. The 18% protein at all threonine levels gave an AMEn value with an average value of 3418.15 Kcal/kg and N Retention with a value of 89.12%. Feed treatment with a protein content of 18% combined with 100%, 110%, and 120% threonine treatment gave the best results in body weight gain and feed efficiency.
EKSTRAKSI MINYAK ATSIRI DAUN ROSELLA (Hibiscus Sabdaíiffa L ) METODE WATER STEAM DESTILATION Helilusiatiningsih, Nunuk; Irawati, Titik; Syahara, Muhammad Alwi
BUANA SAINS Vol 23, No 3 (2023)
Publisher : Universitas Tribhuwana Tunggadewi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33366/bs.v23i3.5647

Abstract

The rosella plant has antioxidant and coloring compounds that are useful for coloring and aromatic various drinks. The research aimed to study the extraction of essential oils from rosella leaves through phytochemical screening and sensory testing of the oil results. The research method used extraction of essential oil using water steam distillation, color, aroma analysis using the hedonic method, and antioxidant activity using the DPPH method. Results showed the amount of essential oils in leaves is 0.0087% in 1 kg of dry material. Rosella Leaf Oil 25% like the yellow color, 75% like it, 0% dislike it, 30% like the aroma of the leaf essential oil, 70% like it, and 0% dislike it. The antioxidant activity in rosella leaves with concentrations (ppm): of 5, 10, 25, 50, 100, and 200 ppm (22,5; 29,7;  34,9;  42,13;  44,5;  51, 4)%.  A comparison or control test using ascorbic acid with the same concentration as above showed a percentage of inhibition (37,53;44,16; 51,84; 61,19; 72,45; 88,22)%.  The IC 50 value of ascorbic acid (as a control) is 26.94 ppm and the IC 50 of Rosella leaf extract is 171.27 ppm, which is classified as having weak antioxidant activity in the leaves. The GC-MS results showed essential oil consists cis-3 Hexenyl Acetate (11.50%), 3-Cyclohexene-1-methanol (4.97%), 2-Propenoic acid (2.65%), Linalool 3,7-oxide (2.15%), Methyl 4-methylhexanoate (1,54%), Butanoic acid (0.54 %), 3-Methylpent-3-en-2-ol (0.25%), 1-Hexen-3-ol (0,24%).

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