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widhadi awp
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Stigma : Jurnal Matematika dan Ilmu Pengetahuan Alam Unipa
Published by Universitas PGRI Adi Buana Surabaya
ISSN : 14121840     EISSN : 26219093     DOI : https://doi.org/10.36456/stigma.15.01
Core Subject : Education,
Mathematics
Jurnal STIGMA adalah jurnal ilmiah Biologi dan Biologi Terapan yang memuat artikel-artikel ilmiah. Jurnal STIGMA diterbitkan oleh Program Studi Biologi-Fakultas Matematika dan Ilmu Pengetahuan Alam - Universitas PGRI Adi Buana Surabaya. Terbit dua kali dalam satu tahun (April-Juli dan September-Desember), Jurnal ini memfasilitasi penelitian dengan tema Biologi Umum, Biologi Terapan, Bioteknologi, Aplikasi Ilmu Biologi.
Arjuna Subject : Umum - Umum
Articles 6 Documents
 1 
Search results for , issue "Vol 9 No 01 (2016)" : 6 Documents clear
AKTVITAS ANTIBAKTERI EKSTRAK ETANOL BUAH MENTIMUN (Cucumis sativus Linn) TERHADAP Salmonella typhi dan Bacillus cereus SECARA IN VITRO A.S.H. Permana; M warman
STIGMA: Jurnal Matematika dan Ilmu Pengetahuan Alam Unipa Vol 9 No 01 (2016)
Publisher : FMIPA : Universitas PGRI Adi Buana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36456/stigma.vol9.no01.a317

Abstract

The objective of this studi was evaluate the antibacterial activity of Cucumber fruit against Salmonella typhidan Bacillus cereus in vitro. Ethanol extract of Cucumber fruit devided into 4 doses 100%, 75%, 50%, and25% S. typhi dan B. cereus. Amoxicillin were used as positive control and aquadest as negative control. Theresult this study showed antibacteria activity of ethanol extract Cucumber fruit inhibited the growth ofSalmonella typhi and Bacillus cereus. Antibacterial activity of Cucumber fruit 100% concentration of theextract produce inhibited zone greatest is 7,7±0,92 mm included categorized intermediate. Whereas B.cereus inhibited zone greatest is 2,6±0,39 mm, and dan included categorized weak. Keywords:Antibacterial activity, Salmonella typhi, Bacillus cereus, in vitro, Ethanol extract cucumber fruit
PENENTUAN JUMLAH BAKTERI, KADAR PROTEIN DAN SIFAT ORGANOLEPTIK DAGING AYAM BROILER (Gallus domesticus) SETELAH DIRENDAM DALAM LARUTAN LIDAH BUAYA (Aloe vera) Imro'atu Warda; Susie Amilah
STIGMA: Jurnal Matematika dan Ilmu Pengetahuan Alam Unipa Vol 9 No 01 (2016)
Publisher : FMIPA : Universitas PGRI Adi Buana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36456/stigma.vol9.no01.a325

Abstract

The solvents of aloe (Aloe vera) are known to be used as an antibacterial. This study aims to prove the antibacterial activity in broiler chicken meat (Gallus domesticus), the variables were observed in this studythe number of bacteria, protein content and organoleptic properties of broiler meat soaked in a solvents ofaloe vera. Aloe vera is obtained from MIPA laboratory of blender, then dissolved in aquadest. This study wasconducted using a completely randomized experimental design consisting of 5 concentration of aloe vera (0,25, 30, 35, 40 g / 100ml) with 4 replications. The results showed that the concentration of aloe significanteffect (P<0.05) against the number of bacteria on broiler chicken meat. However, no significant effect (P>0.05) on protein content and organoleptic properties. Results of this study indicate that aloe vera solventsconcentration of 25 g / 100 ml can be used to preserve meat broiler without altering the protein contentand organoleptic properties. Keywords: broiler chicken meat, Aloe vera, bacteria, proteins, organoleptic
UJI EFEKTIFITAS PERASAN KUNYIT PUTIH (Curcuma spp.) TERHADAP PERTUMBUHAN Escherechia coli Evy Ratnasari Ekawati
STIGMA: Jurnal Matematika dan Ilmu Pengetahuan Alam Unipa Vol 9 No 01 (2016)
Publisher : FMIPA : Universitas PGRI Adi Buana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36456/stigma.vol9.no01.a326

Abstract

This study aims to determine effectiveness of the juice of white turmeric (Curcuma spp.) to the growth ofEscherechia coli. This study was an experimental study using disc diffusion method to look at theeffectiveness of the juice of white turmeric (Curcuma spp.) to the growth of Escherechia coli. The juice ofwhite turmeric used has concentration of 20%, 40%, 60%, 80% and 100%. The results showed the juice ofwhite turmeric (Curcuma spp.) at concentration of 40% to 100% has the potential to inhibit the growthEscherechia coli. Nonetheless, based on the statistical test concentration of 40% and 60% was notsignificantly different from the control and concentration of 20%. Concentration of 80% and 100%significantly different from the control and concentration of 20%, 40%, 60%. Concentration of 80% wassignificantly different from 100% concentration, the more effective use of freshly white turmeric (Curcumaspp.) with 100% concentration to accelerate the process of growth inhibition Escherechia coli. Keywords: the juice of white turmeric (Curcuma spp.), Escherechia coli
SINTESIS NANOPARTIKEL NIKEL HIDROKSIDA SECARA ELEKTROKIMIA DENGAN PENAMBAHAN NA-SITRAT SEBAGAI AGEN PEREDUKSI Yanantra Budi Pramana
STIGMA: Jurnal Matematika dan Ilmu Pengetahuan Alam Unipa Vol 9 No 01 (2016)
Publisher : FMIPA : Universitas PGRI Adi Buana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36456/stigma.vol9.no01.a327

Abstract

Nickel hydroxide nanoparticles have been synthesized electrochemically. The synthesis based on electrolysis system which bare nickels were used for both cathode and anode. The potential applied during electrolysis was from 25 and 55 V. The sodium citrate concentration 0.3 M, was used to study optimal condition of nickel hydroxide nanoparticles formation. UV-Vis spectroscopy, X-ray Diffraction (XRD), Transmission Electron Microscopy (TEM) and Scanning Electron Microscopy (TEM) were used to characterize themicrostructure and morphology of the products. Spherical nanoparticles were obtained by this method. The generated particles are nearly spherical with a mean size 60 nm depending on synthesis condition. Keywords: Nickel hydroxide nanoparticles, electrochemically, high voltage
PEMANFAATAN KACANG TUNGGAK (Vigna unguiculata) DITAMBAH AIR SIWALAN (Borassus flabellifer) SEBAGAI BAHAN BAKU PEMBUATAN KECAP Siti Miftahul; Tatang Sopandi
STIGMA: Jurnal Matematika dan Ilmu Pengetahuan Alam Unipa Vol 9 No 01 (2016)
Publisher : FMIPA : Universitas PGRI Adi Buana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36456/stigma.vol9.no01.a328

Abstract

This study aims to prove that cowpea can be used as raw material for the manufacture of soy sauce. Materials used are 200 g / L cowpea without water siwalan and 250, 300, 350, 400, 450 g of cowpea with palm 300 ml of water and added water up to a volume of 1 liter with the same fermentation time is 1.5 months , This research was conducted by completely randomized design, test protein and reducing sugar levels were tested using one-way ANOVA, followed by Least Significant Difference Test at test level 0:05. Organolpeptik test uses 8 semi-trained panelists, the data obtained are transformed to log + &frac12; further tested using one-way ANOVA and Least Significant Difference test continued at test level 0:05. Results of this study indicate that the use of various concentrations of cowpea no significant effect (P> 0.05) on the soy protein content. The use of cowpea 250 g / L plus water siwalan significant effect on reducing sugar. Flavor of soy sauce made from 200 g / L of cowpea with no added water palm and 250-400 g / L cowpea plus water siwalan panelists disliked. The color of soy sauce made from 200 g / L of cowpea with no added water palm and 250-400 g / L cowpea plus water siwalan preferred by the panelists. The aroma of soy sauce made from cowpea 200 g / L is preferable to the aroma of soy sauce made of 250-400 g / L cowpea plus water palm. Keywords: soy sauce, cowpea, siwalan water, protein, sugar reduction
PENGARUH EKSTRAK ETANOL BUNGA, DAUN, DAN AKAR KEMBANG SEPATU (Hibiscus rosa sinensis) TERHADAP BERAT, VOLUME, DAN DIAMETER TUBULUS SEMINIFERUS MENCIT (Mus musculus) Rojib Rojib; Sukarjati Sukarjati
STIGMA: Jurnal Matematika dan Ilmu Pengetahuan Alam Unipa Vol 9 No 01 (2016)
Publisher : FMIPA : Universitas PGRI Adi Buana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36456/stigma.vol9.no01.a329

Abstract

Hibiscus (Hibiscus rosa sinensis) many are grown as ornamental plants, shrubs, and grown in the tropics andsubtropics. Hibiscus is also one kind of plant that is potentially as antifertility. Types of bioactif compoundscontained in plants, the main compounds that are derived from the steroids, alkaloids, isoflavanoid,tripernoid, and activity as xanthon antifertilities. This encourages the researcher to know the influence ofethanol ekstract flowers, leaves, and roots of hibiscus (Hibiscus rosa sinensis) against the weight, volumeand diameter ofseminiferoustubules mice (Mus musculus). The sample of this research is the mice by asmuch as 27 tail with a weight of 20-30 grams, aged 2.5 months. Murine in to 3 groups, each group is divided3 treatment. As for the treatments given are extracts of flowers, leaves, and roots of hibiscus with dosecontrol, 150, and 300 mg/kg. Granting of extracts for 35 days. On day 37 mice are in surgery for testicularweight to observations taken, the volume of the testes. The testes then made preparations and measureddiameter of seminiferoustubules. This research is experimental research using Random Design Group. Thedata obtained were analyzed with variant analysis (ANOVA) in one direction and continued with test LSD(Least Significant Different). The results of the research there shows the influence of the ethanol extracts offlowers, leaves, and roots of hibiscus against testicular volume, weight, and diameter of seminferoustubules (P < 0.05). The best treatment that can decrease the weight, volume and diameterofseminiferoustubules is on the flower with a dose of 300 mg/kg. The results of this research it can beconcluded that extracts of flowers, leaves, and roots can lose weight, testicular volume and diameter ofseminiferoustubules. In future it is hoped the research could be developed as material antifertilitas in men. Keywords:Extract of flower, Laves, roots of (Hibiscus rosa sinensis), testicles, diameter of seminiferous tubules, mice (Mus musculus).

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