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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 14 No 02 (2021)" : 6 Documents clear
Aktivitas Antimikroorganisme Ekstrak Metanol Daun Gamal (Gliricidia Sepium) Terhadap Neisseria gonorrhoeae Dan Candida albicans Maria Paolina Grazzia; Tatang Sopandi
STIGMA: Jurnal Matematika dan Ilmu Pengetahuan Alam Unipa Vol 14 No 02 (2021)
Publisher : FMIPA : Universitas PGRI Adi Buana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36456/stigma.14.02.4494.48-55

Abstract

Infectious diseases of the genital tract and the increasing resistance of microorganisms to antibiotic therapy have received high attention in worldwide. Gamal plant (Gliricidia sepium) is a multipurpose leguminous plant that contains various antimicrobial secondary metabolites. This study aims to prove that the methanol extract of gamal leaves can significantly inhibit the growth of the bacteria Neisseria gonorrhoeae and the fungus Candida albicans. The study was carried out in an experimental randomized block design with each treatment repeated 5 times. Types of microorganisms, namely N. gonorrhoeae bacteria and C. albicans fungi as a group and concentrations of methanol extract of gamal leaves (0, 25, 50, 100, 150 and 200 mg/ml and chloramphenicol) as treatments. The results showed that gamal leaf extract could inhibit the growth of the bacteria N. gonorrhoeae and the fungus C. albicans. The inhibition of methanol extract against bacteria and fungi increased with increasing test concentration. This study also showed that the inhibition of methanolic extract of gamal leaves against the fungus C. albicans was higher than N. gonorrhoeae bacteria. The results of the study concluded that the methanol extract of gamal leaves was showed to inhibit the growth of N. gonorrhoeae bacteria and C. albicans bacteria. Gamal leaf methanol extract has the potential to be used as an alternative therapy for infectious diseases of the genital tract, especially vaginal candidiasis and gonorrhea. Keywords: gamal leaves, antimicroorganism, Neisseria gonorrhoeae, Candida albicans
Analisis Kandungan Tanah Pada Media Pertumbuhan Tanaman Pacar Air (Impatiens balsamina) Di Kabupaten Jombang Dyah Ayu Sri Hartanti; Awang Nia Agustin
STIGMA: Jurnal Matematika dan Ilmu Pengetahuan Alam Unipa Vol 14 No 02 (2021)
Publisher : FMIPA : Universitas PGRI Adi Buana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36456/stigma.14.02.4495.56-61

Abstract

This research was conducted to determine the soil content in the growth media of water pacar air plants (Impatiens balsamina) in Jombang Regency. This study uses qualitative methods. Random soil sampling is performed by determining the soil sampling points randomly, but spreads evenly throughout the represented area of the soil. Soil content analysis is done using several methods namely Kjeldahl method for nitrogen analysis, Olsen method for phosphorus analysis and, Walkley and Black method for C-organic analysis. The results showed the status of soil content in the research area is classified as low to very high parameters or has not met soil fertility standards. In Nglajur Village, Peterongan subdistrict has dark grayish brown soil color, sandy clay texture and Trawasan Subdistrict Village has dark gray soil color textured dusty clay. Keywords: Pacar Air Plants, Soil, Nutrients, Soil Fertility
Evaluasi Sifat Fisikokimia Mie Basah Dengan Subsitusi Tepung Tulang Ikan Bandeng (Chanos chanos) Rini Rahayu Sihmawati; A. Wardah
STIGMA: Jurnal Matematika dan Ilmu Pengetahuan Alam Unipa Vol 14 No 02 (2021)
Publisher : FMIPA : Universitas PGRI Adi Buana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36456/stigma.14.02.4562.62-70

Abstract

Milkfish bone waste from the thornless milkfish industry contains have sufficient protein, calcium and phosphorus element. The milkfish bones can be processed and used as fish bone meal which is used as a substitute for processed foods, including wet noodles. This study aims to evaluate the physicochemical analysis of noodles wet. The research design used was a completely randomized design with one factor, namely the formulation of. milkfish bone meal to substitute for wheat, with the composition, F0 (100:0), F1 (95:5), F2 (90 :10), F3 (85:15) and F4 (80:20). Research observations include water content, protein content, water absorbtion, dough expantion and texture. The results were analyzed by analysis of variance (ANAVA) and the smallest significant difference (BNT) if, there was a difference at the 5% level of significance. The substitution formulation of milkfish bone meal had a significant effect on all parameters.The more addition of milkfish meal.the higher the protein content will increase the rate protein content and the water content, water absorption,dought expantion and texture are lower.Base on the protein content, it is recommended to add 20% fish bone meal because it has the highest protein content. The best treatment for water content, water absorption, dough expantion and texture was the addition 0f 5% fish bone meal. Keywords: Substitution, fish bone meal, wet noodles, physicochemical analisis
Pengaruh Kombinasi Kulit Semangka (Citrullus lanatus) Dan Jambu Biji Merah (Psidium guajava) Terhadap Kualitas Selai Lembaran Tiurma Wiliana Susanti Panjaitan; Dwi Agustiyah Rosida
STIGMA: Jurnal Matematika dan Ilmu Pengetahuan Alam Unipa Vol 14 No 02 (2021)
Publisher : FMIPA : Universitas PGRI Adi Buana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36456/stigma.14.02.4563.71-81

Abstract

Producing fruit leather in Indonesia is still rarely done in the food industry, even though it is hoped to make bread presentation problems more practical. Fruit leather can be made from fruits, such as using watermelon skin (albedo) which is often discarded even though the pectin content is high. Watermelon rind has a color, taste and aroma that is less attractive, so it needs to be combined with red guava because it has a distinctive color, taste and aroma. This study aims to identify the effect of the combination of watermelon skin and red guava on sheet jam's chemical, physical, and organoleptic characteristics. Also, to determine the most preferred combination based on organoleptic tests. The study used a completely randomized design with 1 factor: a combination of watermelon skin and red guava with 4 levels of treatment : P1 (20% : 80%), P2 (30% : 70%), P3 (40% : 60%) dan P4 (50% : 50%). Parameters observed were water content, pectin content, pH, ash content, reducing sugar content, total dissolved solids and texture. This data is analyzed by Analysis of Variance and the smallest significant difference (if there is a difference). The organoleptic test was carried out on 44 panelists (untrained) covering taste, color, aroma and texture using five levels of preference scale: very dislike (1), dislike (2), neutral (3), like (4) and very like (5). The formulation with the use of more watermelon skin and less red guava resulted in an increase in water content and pectin content, the texture was more supple. On the other hand, reducing sugar content, total dissolved solids and ash content decreased. In terms of color and taste, panelists prefer P1 and P2 treatments. Regarding aroma, the four treatments received relatively the same response, as for texture, panelists prefer the P3 treatment, therefore the recommended combination is treatment P1 and P2. Keywords: fruit leather, watermelon skin, guava, jam quality, organoleptic test
Pengaruh Pemberian Ikan Nila (Oreochromis niloticus) terhadap Pertumbuhan Tanaman Sawi Pagoda (Brassica narinosa) dengan Sistem Akuaponik Lailatus Sukhtiyah Indah Safitri; Diah Karunia Binawati
STIGMA: Jurnal Matematika dan Ilmu Pengetahuan Alam Unipa Vol 14 No 02 (2021)
Publisher : FMIPA : Universitas PGRI Adi Buana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36456/stigma.14.02.4564.82-88

Abstract

Tujuan penelitian ini untuk mengetahui pengaruh variasi jumlah ikan nila (Oreochromis nilotics) terhadap pertumbuhan tanaman sawi pagoda (Brassica narinosa) dengan sistem akuaponik. Penelitian menggunakan Rancangan Acak Lengkap (RAK) dengan tiga perlakuan dan sembilan ulangan. Perlakuan pada penelitian adalah perbedaan jumlah ikan (40, 60 dan 80 ekor) yang digunakan pada sistem akuaponik. Penelitian dilakukan selama 45 hari, parameter yang diamati adalah jumlah daun, kandungan klorofil total dan berat basah tanaman sawi pagoda (Brassica narinosa). Data hasil penelitian dianalisis menggunakan uji Analysy of Variance, jika berpengaruh signifikan maka analisis dilanjutkan dengan uji Duncan Multiple Range Test (DMRT). Hasil Analysy of Variance jumlah daun dan kandungan klorofil total tanaman sawi pagoda (Brassica narinosa) pada penelitian ini menunjukkan hasil yang signifikan yakni (P<0,05), pada berat basah didapatkan signifikasi 0,077 (P>0,05). Dapat disimpulkan bahwa variasi jumlah ikan nila berpengaruh terhadap jumlah daun dan kandungan klorofil total, tetapi tidak berpengaruh terhadap berat basah tanaman sawi pagoda (Brassica narinosa). Hasil uji Duncan Multiple Range Test (DMRT) menunjukkan bahwa jumlah ikan nila 80 ekor paling berpengaruh terhadap jumlah daun dan klorofil total. Kata Kunci: Akuaponik, Ikan Nila, Sawi Pagoda, Pertumbuhan.
Pengaruh Pemberian Hormon NAA Dan BAP Pada Media MS (Murashige and Skoog) Terhadap Pertumbuhan Anggrek Vanda tricolor Secara In-Vitro Ngadiani; Try Jayanti
STIGMA: Jurnal Matematika dan Ilmu Pengetahuan Alam Unipa Vol 14 No 02 (2021)
Publisher : FMIPA : Universitas PGRI Adi Buana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36456/stigma.14.02.4885.89-98

Abstract

Anggrek vanda di pasar lokal maupun ekspor memiliki permintaan yang sangat tinggi hal ini tidak sebanding dengan perbanyakan vegetative anggrek vanda yang terbatas. Perbanyakan anggrek vanda dengan metode kultur jaringan merupakan solusi dalam perbanyakan bibit anggrek vanda dan dengan kultur jaringan didapatkan bibit anggrek yang berkualitas tinggi. Penelitian ini bertujuan agar mengetahui perlakuan zat pengatur tumbuh NAA dan BAP juga mengetahui konsentrasi optimum penambahan NAA dan BAP terhadap media tumbuh anggrek vanda. Penelitian ini termasuk penelitian eksperimental dimana peneliti menggunakan metode rancangan acak lengkap (RAL) dengan 4 perlakuan yang berbeda yakni MS (0ppm NAA + 0ppm BAP), MS (2ppm NAA + 2ppm BAP), MS (4ppm NAA + 4ppm BAP), MS (6ppm NAA + 6ppm BAP) diulang sebanyak 3 kali pada setiap perlakuan dan dianalisis menggunakan (ANOVA) dengan taraf signifikan (p<0.05) kemudian dilanjutkan menggunakan uji Duncan Multiple Range Test. Penelitian ini menggunakan parameter uji yakni jumlah akar, jumlah daun, berat masaa planlet dan tinggi tanaman. Hasil dari penelitian ini terdapat perbedaan signifikan ddengan pemberian beberapa perlakuan zat pengatur tumbuh NAA dan BAP pada medi MS. Perlakuan B (MS + 2ppm NAA + 2ppm BAP) merupakan perlakuan terbaik dalam mendapatkan hasil optimum guna meningkatkan jumlah akar dan berat massa planlet anggrek vanda. Hasil pada penelitian mampu menjadi referensi bagi pembudidaya kultur jaringan tanaman anggrek vanda. Pembudidaya disarankan menggunakan zat pengatur tumbuh dengan konsentrasi 2ppm NAA dan 2ppm BAP untuk meningkatkan pertambahan jumlah akar dan berat massa planlet anggrek vanda. Kata Kunci : Anggrek Vanda, BAP, Media MS, NAA dan Kultur Jaringan.

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