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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 01 (2021)" : 6 Documents clear
Adaptasi Anatomis Tumbuhan Terhadap Perbedaan Stress Lingkungan Hafidha Asni Akmalia
STIGMA: Jurnal Matematika dan Ilmu Pengetahuan Alam Unipa Vol 14 No 01 (2021)
Publisher : FMIPA : Universitas PGRI Adi Buana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36456/stigma.14.01.3491.10-17

Abstract

Adaptations are carried out by plants for their survival in a very dynamic environment. An example of adaptation that has been developed is anatomical adaptation in root, stem and leaves. The purpose of this review article is to provide steps that humans can take in helping plants to maintain their anatomical adaptations so that they can promote plant growth and development under environmental stress. This review is based on a literature review of scientific articles that discuss the anatomical adaptation of plants to different environmental stresses. Based on the studies conducted, further research efforts are needed to keep plants sustainable under increasingly challenging environmental stress. Keywords: adaptation; anatomy; environmental stress
Konsumsi Nitrogen Dan Karbon Oleh Spirulina platensis Dari Kotoran Burung Puyuh Sebagai Media Kultivasi Santi Amelia Putri; Tatang Sopandi
STIGMA: Jurnal Matematika dan Ilmu Pengetahuan Alam Unipa Vol 14 No 01 (2021)
Publisher : FMIPA : Universitas PGRI Adi Buana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36456/stigma.14.01.3492.1-9

Abstract

The purpose of this study was to determine the level of nitrogen and carbon consumption in several variations in the concentration of quail manure as a cultivation medium for Spirulina platensis. The study was conducted from April 10 to June 19, 2020 at the Biology Laboratory of the Faculty of Science and Technology, Universitas PGRI Adi Buana, Surabaya. This study used a completely randomized design (CRD) with 4 concentrations of quail manures, each of which was repeated 5 times. The concentrations of quail manures used as the cultivation medium for S. platensis consisted of 50, 100 and 150 g/l, and Zarrouk's medium as control (0 g/l of quail manures). The results showed that the concentration of quail manures in the cultivation medium have a significant effect (P <0.05) on nitrogen and carbon consumption and S. platensis biomass. The nitrogen consumption at the quail manures concentrations of 100 and 150 g/l was significantly (P<0.05) higher than the nitrogen consumption at the concentration of 50 g/l and Zarrouk media. Carbon consumption at 150 g/l quail manures concentration was significant (P <0.05) higher than 50 and 100 g/l but significantly (P<0.05) lower than carbon consumption on Zarrouk medium. The yield of S. platensis biomass obtained from quail manure medium with a concentration of 100 g/l was significant (P<0.05) higher than 50 and 150 g/l but significantly (P<0.05) lower than the biomass obtained from Zarrouk medium. This study concluded that quail manure can be used as a source of nitrogen and carbon for S.platensis cultivation media. The concentration of 100 g/l of quail manure is the optimum concentration for use in S.platensis cultivation media. Keywords: S. platensis, quail manure, nitrogen, carbon, biomass.
Tekstur, Kadar β-Karoten dan Kalsium Flakes dengan Formulasi Tepung Labu Kuning dan Daun Kelor Tiurma Wiliana Susanti Panjaitan; Dwi Agustiyah Rosida
STIGMA: Jurnal Matematika dan Ilmu Pengetahuan Alam Unipa Vol 14 No 01 (2021)
Publisher : FMIPA : Universitas PGRI Adi Buana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36456/stigma.14.01.3527.28-33

Abstract

Flakes can be made from various food ingredients that contain carbohydrates and can be added to other nutritional sources to meet nutritional needs. Therefore, it is important to create cereal products that meet the criteria as alternative foods rich in energy, protein and other nutrients such as calcium (Ca). Yellow squash contains β- carotene while moringa plants, especially in leaves, contain high levels of calcium. The study aims to determine the Ca content and texture of the flakes substituted with pumpkin flour and moringa leaf flour. Substitution with pumpkin and moringa leaves is expected to meet the need for β-carotene and calcium. This research is an experimental study using a completely randomized design with one factor, namely the formulation of pumpkin flour and moringa leaf flour to substitute wheat flour with the composition of F0 (100: 0: 0), F1 (70: 27,5: 2,5), F2 (70: 25: 5) and F3 (70: 22,5: 7,5). The parameters observed were β-carotene levels, calcium levels and physical / texture properties were analyzed by analysis of variance (ANOVA) and the least significant difference (LSD) if there was a difference at the 5% real level. The results showed that the flour formulation of pumpkin and moringa leaf had no effect on the flake texture but significantly affected calcium and β-carotene levels. The more the addition of moringa leaf flour and the less pumpkin flour, the higher the calcium level. Conversely, the more pumpkin flour added, and the more moringa leaf flour reduced, the higher the β-carotene content. Based on the β-carotene content, the recommended formula is F1 because it produces the highest β-carotene content, while the F3 formulation produces the highest calcium content. Keywords: flake, pumpkin flour, moringa leaf flour, β-carotene, calcium content, texture
Karakteristik Kimia Pempek Akibat Penambahan Konsentrasi Ekstrak Kulit Buah Naga Dan Metode Penyimpanan Anak Agung Putu Sri Mahayani; Amelia Nirmalawaty
STIGMA: Jurnal Matematika dan Ilmu Pengetahuan Alam Unipa Vol 14 No 01 (2021)
Publisher : FMIPA : Universitas PGRI Adi Buana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36456/stigma.14.01.3584.10-17

Abstract

The part of dragon fruit that is used is only the flesh of the fruit for direct consumption or processing as other food products, while the peel is just thrown away. Based on several research results, red dragon fruit peel is a rich source of polyphenols and antioxidants. The antioxidant activity of the red dragon fruit peel is greater than the activity in the flesh, so the dragon fruit peel can be used as a natural herbal medicine by utilizing the antioxidants inside. The more dragon fruit peel extract is added, the pempek's shelf life is longer than without the addition of dragon fruit peel extract (control), the use of vacuum plastic can increase the shelf life of pempek. Keywords: dragon fruit peel extract, pempek, physical properties, chemical properties
Formulasi Dan Evaluasi Sediaan Hand Body Lotion Ekstrak Biji Bunga Matahari (Helianthus annus L.) I.A.K. Pramushinta; P.T. Hardani
STIGMA: Jurnal Matematika dan Ilmu Pengetahuan Alam Unipa Vol 14 No 01 (2021)
Publisher : FMIPA : Universitas PGRI Adi Buana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36456/stigma.14.01.3612.34-39

Abstract

Sunflower (Helianthus annus L.) is a plant that has many benefits. The oil in sunflower seeds contains unsaturated fatty acids in the form of oleic and linoleate morethan soybean, peanut, corn and palm oil. Sunflower seed oil is also reported to be used as a base for hand body lotions. This study aims to make a Hand Body Lotion formulation from sunflower seed extract and then evaluated. The evaluations carried out were pH, homogeneity, color and odor. The results of pH evaluation showed that there was a change in the pH of each formula which was still in the pH range of the topical preparations 4.5-8 according SNI. While the best homogeneity test results in formula II when compared to formulas I and III are due to clumping in formulas I and III. The test results on the smell and color of the Hand Body Lotion did not change with the opinions of 35 respondents. Keywords:Hand Body Lotion, Sunflower Seed Extract, Semisol
Identifikasi Jenis Tumbuhan dari Famili Asteraceae Di Kawasan Wisata Irenggolo Kediri Ida Rahmawati; Tutut Indah Sulistiyowati
STIGMA: Jurnal Matematika dan Ilmu Pengetahuan Alam Unipa Vol 14 No 01 (2021)
Publisher : FMIPA : Universitas PGRI Adi Buana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36456/stigma.14.01.3614.40-47

Abstract

Irenggolo is a waterfall tourism area located in the Wilis Mountains. This area has a fairly good diversity of flora, one of which is Asteraceae family. This family has very divers in members. Research on Asteraceae plants in this area never been carried out. The purpose of this study was to determine the type of plants from the Asteraceae family that live in the Irenggolo Kediri. Methode for sampling using Visual Encounter Survey technique in four different areas. Observation results obtained 13 species of plants from Asteraceae family with three tribes, that are Sphagneticola trilobata, Galinsoga parviflora, Crassocephalum crepidioides, Cosmos sulphureus, Tagetes erecta, Sonchus wightianus, Conyza bonariensis, Ageratum conyzoides, Dahlia pinnata, Bidens pilosa, Zinnia elegans, Chromolaena odorata, serta Eupatorium capillifolium.

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