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Biosaintifika: Journal of Biology & Biology Education

biosaintifika
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Published by Universitas Negeri Semarang

ISSN : 2085191X EISSN : 23387610 DOI : -

Core Subject : Agriculture,

Agriculture, Biological Sciences & Forestry

Biosaintifika Journal of Biology & Biology Education, an electronic international journal, provides a forum for publishing the original research articles, review articles from contributors, and the novel technology news related to biological research and biological education.

Arjuna Subject : -

Articles 1,068 Documents

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Human Reproduction Contextual Case-Based Worksheet to Improve Students’ Interpersonal Communication and Collaboration Skills Alimah, Siti; Utami, Listyawati
Biosaintifika: Journal of Biology & Biology Education Vol 11, No 2 (2019): August 2019
Publisher : Department of Biology, Faculty of Mathematics and Sciences, Semarang State University . Ro

Human reproduction in biology is included in the category of a topicthat cannot be sensed directly, but is close to the problems in the daily lives of students. It needs to be optimized in classroom learning, one of which is a worksheet based on human reproductive contextual case studies.This study aimed to find out the effect of human reproduction case-based worksheet on interpersonal communication and collaboration skills. The research method used was one hort case study design involving 68 students of Senior High School in Semarang. The data was analyzed by descriptive quantitative method. The results of the analysis showed that both of student's interpersonal communication and collaboration skills were invery high category.The teacher and student showed a positive response to the use of case-based worksheet in human reproduction learning activity. Based on the results of the study, it can be concluded that the human reproduction case-based worksheet improves interpersonal communication and collaboration skills in Senior High School student in Semarang.The teacher can use this contextual case-based worksheet as an alternative in human reproduction teaching and learning to explore, train and familiarize students' collaboration and communication skills that will be beneficial for their live in the future.

Potency of Brown Sugar as a Nectar Substitute for Trichoglossus haematodus in Captivity Prijono, Siti Nuramaliati; Rachmatika, Rini
Biosaintifika: Journal of Biology & Biology Education Vol 11, No 2 (2019): August 2019
Publisher : Department of Biology, Faculty of Mathematics and Sciences, Semarang State University . Ro

Trichoglossus haematodus (Linnaeus, 1771) is nectarivorous bird that feed on nectar as a source of carbohydrate. In captivity, it is not practical to provide a continued diet of nectar from the flowers. Therefore, this study aimed to find other carbohydrate sources such as brown sugar as substitute nectar for T. haematodus. Twelve wild T. haematodus in four cages offered five types different brown sugar solution with different concentrations. Since brown sugar has low protein content, therefore the birds also offered commercial baby biscuit to meet the protein requirement. The results showed that the birds like to consume all types of brown sugar solution with sugar concentration up to 40% . However, the siwalan brown sugar solution was the most favored by the bird. over the other type of brown sugar solutions (aren, coconut, sugar cane and regular commercial “palm” brown sugar). Furthermore, the result showed that the birds prefer commercial baby biscuit was soaked in the brown sugar solution with concentration 20%. This study provides the information that the brown sugar solution based diet has potency as an alternative carbohydrate source to substitute nectar for T. haematodus in captivity which is more practical and can increase the survival rate in birds.

Toxicity of Miana Leaf (Coleus blumei) Extract Against Houseflies (Musca domestica) Surahmaida, Surahmaida; Umarudin, Umarudin
Biosaintifika: Journal of Biology & Biology Education Vol 11, No 2 (2019): August 2019
Publisher : Department of Biology, Faculty of Mathematics and Sciences, Semarang State University . Ro

Houseflies (Musca domestica) is an disease-carrying insect that plays an important role in the spread of disease in humans and animals. One way to control houseflies is using Miana leaves (Coleus blumei) as botanical pesticide. The purpose of this study was to determine the chemical compounds contained in Miana leaf as well as determine the optimal concentration of Miana leaf extract in causing knockdown effect in houseflies. Miana leaf fine powder was soaked with methanol (maceration) for 3 days followed byphytochemical screening (chemical reagents and Gas Chromatography Mass Spectrophotometry (GCMS) and anti-houseflies toxicity tests. Testing of methanolic extract of Miana leaves was made in the form of spray using the knockdown method at concentrations of 5%, 10%, 20%, 30% and 40% and observed in 5, 10 and 15 minutes. The results of phytochemical screening with chemical reagents showed that the extract contained alkaloids, tannins, flavonoids, saponins and terpenoids; while the results of GCMS analysis showed 8 bioactive compounds. The results of the study revealed that at a concentration of 30% and 40%, methanolic extract of Miana leaves could result in a knockdown effect that was accompanied by death with a percentage value of 100% in the first 5 minutes of observation. This research shows that methanolic extract of Miana leaves can be used as an alternative to botanical pesticides in controlling houseflies (Musca domestica).

Geochronology of Cadmium (Cd), Cuprum (Cu), and Arsenics (As) in Annual Band of Coral Porites lutea at Pantai Kondang Merak, Malang Luthfi, Oktiyas Muzaky; Rijatmoko, Sigit; Isdianto, Andik; Setyohadi, Daduk; Jauhari, Alfan; Lubis, Ali Arman
Biosaintifika: Journal of Biology & Biology Education Vol 11, No 2 (2019): August 2019
Publisher : Department of Biology, Faculty of Mathematics and Sciences, Semarang State University . Ro

Coral reef is a massive natural building block that mainly composed of hard coral. In ecological view coral reef is the center of biological activity for shelter, foraging and feeding place. Porites lutea is a common coral in reef flat area such as in Pantai Kondang Merak. This coral can form a massive with hillocky colony surface and has a slow linear extension rate, that made this coral has long longevity. The annual growth band of coral skeleton provide information of pollutants in the coastal extending back over several years ago due to ability of coral aragonite traped trace metal from environment. The aim of this research was to determine the concentration of trace metals of Cd, Cu and As along with the coral annual banding. The heavy metals detection was performed using ICP-OES (iCAP 7400 Series). The concentration of Cd, Cu and As in sample 1 (KM1) were 2.236 mg/kg, 9.726 mg/kg, and 2.474 mg/kg, while sample 2 (KM2) were 1.989 mg/kg, 19.157 mg/kg, and 2,064 mg/kg respectively. Two ways mechanism of trace metals to be trapped in the coral skeleton are by direct mechanism when trace metals in a form dissolved ion that were uptaken by coral then stored into coral skeleton and by indirect mechanism when particulate metals ingested by plankton then eaten by coral through coral tissue. The tracing of heavy metal in coral is provided important information of environment condition of the sea from 2009 - 2015 that may be used for authority decision regarding pollutant ambient in the sea environment.

Isolation of Partial Housekeeping Genes on Tuntun Angin (Elaeocarpus floribundu) Roslim, Dewi Indriyani; Ashfira, Ashfira; Mutiarawati, Dilla; Rosmeilinda, Tio Fanny; Aisyah, Nur; Herman, Herman; Lestari, Wahyu
Biosaintifika: Journal of Biology & Biology Education Vol 11, No 2 (2019): August 2019
Publisher : Department of Biology, Faculty of Mathematics and Sciences, Semarang State University . Ro

Some genes like 18S rRNA, 26S rRNA, elongation factor 1-alpha (EF1a), and beta-tubulin (TUB) are members of housekeeping genes group that are commonly used as internal control in gene expression study. This study aimed to isolate those four housekeeping genes of tuntun angin (Elaeocarpus floribundus). The research material included fresh leaves of E. floribundus that were picked up from Kajuik Lake in Riau Province and four primer pairs. The procedures consisted of total DNA isolation using Genomic DNA Mini Kit Plant (Geneaid), polymerase chain reaction (PCR), electrophoresis on 1% agarose gel, sequencing, and bioinformatic analysis. This study has been isolated 18S rRNA, 26S rRNA, EF1a, and TUB genes with the size of 422 bp, 922 bp, 856 bp, and 877 bp, respectively. The EF1a and TUB genes has never been reported in Elaeocarpaceae family. Thus, those partial DNA sequences are the first sequences reported from this species and can be used as reference genes in this plant after validation.

The Content of Chlorophyll, and Antioxidant Activity of Malabar plum (Syzygium jambos) Leaves at Different Developmental Stages Maliya, Ikhsanti; Darmanti, Sri; Suedy, Sri Widodo Agung
Biosaintifika: Journal of Biology & Biology Education Vol 11, No 2 (2019): August 2019
Publisher : Department of Biology, Faculty of Mathematics and Sciences, Semarang State University . Ro

Malabar plum [Syzygium jambos (L.) Alston.] is a tropical plant which is used as a medicinal plant, because it contains secondary metabolites, especially in the leaves. The different leaves developmental stages can affect physiological changes, especially metabolic processes, so it is suspected to affect the antioxidant content and activity. The objective of this research was to study the difference of leaves morphology, chlorophyll contents, antioxidant contents, and activity at the different leaves developmental stages. Samples were taken from Kaliboto Village, Purworejo, Central Java. The leaf color measurement was using colorimetry; determination of chlorophyll, carotenoids, ascorbic acid, and total phenol content is was using spectrophotometry; and antioxidant activity was using the 1,1-diphenyl-2-picrylhydrazyl (DPPH) method. Qualitative data were analyzed descriptively, while quantitative data were analyzed by ANOVA tests. The results showed that the higher level of leaves development, the higher pigment content, total phenol, and antioxidant activity ascorbic acid content in the mature leaves is lower when compared to the young and old leaves. The results of this research provide the information that can support the use of Malabar plum leaves in traditional medicinal activity and pharmaceutical industry, as well as basic information for plant breeding.

Phylogenetic Relationships among Ornamental Achanturid Fish from Ujunggenteng and Taman Manalusu, West Java Nabila, Afra; Nuryanto, Agus; Prabowo, Romanus Edy; Bhagawati, Dian; Kusbiyanto, Kusbiyanto
Biosaintifika: Journal of Biology & Biology Education Vol 11, No 3 (2019): Article-in-Press
Publisher : Department of Biology, Faculty of Mathematics and Sciences, Semarang State University . Ro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/biosaintifika.v11i3.20671

Acanthuridae is a marine fish family with some members are known as ornamental species. Previous studies has been reported the diversity of Acanthuridae. However, there was no study on the phylogenetic relationship of the Acanthuridae from Ujunggenteng and Taman Manalusu southern coast of West Java. The purpose of this study was to provide information about the phylogenetic relationship among ornamental fishes under the Acanthuridae family of Ujunggenteng Beach Sukabumi and Taman Manalusu Beach Garut, West Java. The phylogenetic tree was reconstructed based on morphological characters using maximum parsimony algorithm in software PAUP with 1000 pseudoreplicates and with Halichoeres marginatus selected as an outgroup species. The phylogenetic tree had a consistency index of 0.6429. The value means that the tree was highly reliable due to its low homoplasy. Acanthuridae formed a monophyletic clade compared to the outgroup species by having seven synapomorphic characters. Acanthurid clade was divided into two subclades at generic levels by nine derived characters; three apomorphic characters in Acanthurus and six apomorphic characters in Naso. The tree indicates that Naso brevirostris and Naso lituratus represents basal group, while all species within genus Acanthurus are the most advanced species. This study is the first to provide the data about the evolutionary relationship of ornamental acanthurid fish from the southern coast of West Java. Data on closely related species is one of the essential scientific basis on making policies regarding the sustainable use of those closely related species.

Utilization of Oocytes Collected from Preserved Ovarian for In Vitro Production of Cat Embryos Eriani, Kartini; Boediono, Arief; Sumarsono, Sony Heru; Azhar, Al
Biosaintifika: Journal of Biology & Biology Education Vol 10, No 1 (2018): April 2018
Publisher : Department of Biology, Faculty of Mathematics and Sciences, Semarang State University . Ro

Preservation of ovarian tissue from severely injured or dead valuable animals has the potential to preserve female germ cells of animals. The ability to mature and fertilize of oocytes from preserved ovary of endangered species will allow us to sustain genetic and global biodiversities. The aims of this study were to investigate the viability of oocytes collected from the preserved ovary and its potential utilization for the production of cat embryos followed by in vitro maturation and fertilization. Ovary was preserved immediately in phosphate buffer saline (PBS) at 4 °C for 24 or 48 hours. The quality and viability of oocytes after the maturation process were identified microscopically using aceto-orcein staining. Biological function of the oocytes was evaluated by using in vitro culture technique for the maturation and fertilization rate in CR1aa medium culture. The results showed that the percentage of oocytes collected from preserved ovary for 24 and 48 hours that remained at the stage of metaphase-II were 29.4% and 21.9% respectively. Fertilization rates produced in the IVF using oocytes collected from ovary preserved for 24 or 48 hours were significantly lower (30%) than that of unpreserved control (36.7%). In conclusion, female germ cells of cat ovary preserved at 4 °C in PBS for 2 days were still viable for in vitro fertilization and thus can be utilized for in vitro production of cat embryos. Information obtained can be used as a basis of knowledge of using a combination of physiological reagent and cold-based preservation technique in modern reproductive technology for animals.

Biological Control of Wood Destroying Organism Using Plant Extracts Collected from Mt. Merapi National Park, Indonesia Ismayati, Maya; Zulfiana, Deni; Tarmadi, Didi; Lestari, Anis Sri; Krishanti, Ni Putu Ratna Ayu; Himmi, Setiawan Khoirul; Fajar, Anugerah; Yusuf, Sulaeman
Biosaintifika: Journal of Biology & Biology Education Vol 11, No 3 (2019): Article-in-Press
Publisher : Department of Biology, Faculty of Mathematics and Sciences, Semarang State University . Ro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/biosaintifika.v11i3.20102

Due to the climate change and global warming, the biodiversity database has gained the attention of the government. In line with the Indonesian Biodiversity Strategy and Action Plan (IBSAP), we have collected plants with insecticidal activity based on the local wisdom. This program aimed to protect Indonesian biodiversity from deforestation along with the loss of the number of species. This research?s goal was to evaluate termiticidal and antifungal properties from some plant extracts collected from the Turgo forest area, Mt. Merapi National park, Java. Three potential plants were evaluated. Based on specimen identification, the three plant samples were Kina (Cinchona sp.), Kamadoh (Dendrocnide stimulans (L.f.) Chew), and Keremi (Homalanthus populneus (Geiseler) Pax). The phytochemical test showed that Kina contained alkoloid, falvonoid, saponin, and tannin, whereas Kamadoh and Keremi contained saponin and tanin, respectively. Overall, all plant extracts have the termiticidal activities and able to inhibit wood- decay fungi with the inhibition percentage around 60% - 100%. Leaf extracts of Kina (Cinchona sp) and Keremi (Homalanthus populneus (Geiseler) showed the highest activity as wood-decay fungi inhibitor. The disclosure of the potential of bioinsecticides from some plants originating from Mount Merapi is very important before being lost due to deforestation and the Mount Merapi disaster. Thus, the potential bioinsecticide in these plants can increase its economic value as a substitute for synthetic insecticides that are friendly to the environment.

Secondary Metabolites and Antioxidant Activity of Ethanolic Extract of Faloak (Sterculia quadrifida) Dillak, Hory Iramaya; Kristiani, Elizabeth Betty Elok; Kasmiyati, Sri
Biosaintifika: Journal of Biology & Biology Education Vol 11, No 3 (2019): Article-in-Press
Publisher : Department of Biology, Faculty of Mathematics and Sciences, Semarang State University . Ro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/biosaintifika.v11i3.20736

Faloak (Sterculia quadrifida) is a medicinal plant used by the people of East Nusa Tenggara to treat lumbago, liver dysfunction and to restore the stamina. The research aims were to determine the qualitative and quantitative content of flavonoids, phenols, and tannins, as well as to examine the antioxidant activity of roots, stem barks, leaves, fruits and seeds extracts of faloak plant. Each organ was extracted with ethanol 70% using the maceration method. The qualitative content of bioactive compounds was determined using the phytochemical screening method. The determination of bioactive compounds concentration was using spectrophotometric methods and antioxidant activity was using the DPPH method. The result of phytochemical screening showed that all of the extracts were exhibit phenols compounds, but the flavonoids and tannins were only found in roots, barks, leaves, and fruits extracts. The quantitative content of total flavonoids of roots, barks, leaves, fruits, and seeds was 48.09; 62.76; 12.56; 11.91 and 1.55 mg/g, while the phenols total content were 82.90; 45.37; 3.43; 29.50 and 2.89 mg/g. Tannins total content were 71.26; 59.64; 10.52; 13.18 and 14.12 mg/g samples respectively. The stem barks and roots extracts showed a very strong antioxidant activity, while leaves, fruits, and seeds extracts belong to the strong category. The potential of faloak as an antioxidant has been widely studied, especially in the stem bark. Studies on the antioxidant activity of roots, leaves, fruits, and seeds can provide new information about the benefits of phaloac plants as a source of natural antioxidants.

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Dr. Ir. Dyah Rini Indriyanti

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Journal Mail Official
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Location
Kota semarang,

Jawa tengah

INDONESIA