BIOEDUSAINS:Jurnal Pendidikan Biologi dan Sains

Pengaruh Penambahan Sari Kurma Terhadap Kualitas dan Aktivitas Antimikroba pada Dadih

2024-01-27T04:09:11+00:00

This research aims to determine the additional concentration of date palm juice which can influence the quality of curd in terms of total LAB, pH value, antimicrobial activity and organoleptic characteristics including color, texture, aroma and taste. This research design used a Completely Randomized Design using 100ml of buffalo milk added with date juice, consisting of 4 treatments, namely P0 (without adding date juice), P1 (10%), P2 (15%), and P3 (20%). Research data was analyzed using ANOVA and Tukey's advanced test if there were differences in influence. The research results showed that Treatment P1 (10%) produced curd with the best characteristics in terms of total BAL 8.60×1011 CFU/ml, pH value 4.45, irradical inhibition zone formed with a diameter of 9.35 mm against Sterptococcus mutans. Meanwhile, in the organoleptic test, treatment P3 (20%) was the best curd chosen by the panelists including aroma 4.60 (liked very much), color 4.16 (liked very much), taste 4.40 (liked very much). However, in terms of texture, the panelists liked the curd treatment P0 (without adding date juice) 4.00 (liked). In conclusion, curd with the addition of date juice had a significantly different effect on total BAL, pH value, antimicrobial activity on Streptococcus mutans, aroma, texture and taste. However, there was no significant difference in color and antimicrobial activity for Candida albicans.

Keywords: BAL, Curd, Dates

Pengaruh Pemberian Variasi Konsentrasi Vitamin B1 (Thiamin HCl) Terhadap Pertumbuhan Fase Vegetatif Anggrek Dendrobium sonia

2024-02-13T23:05:04+00:00

This study aims to determine the effect of varying concentrations of vitamin B1 on the growth of the vegetative phase of the Dendrobium sonia orchid. This research was carried out experimentally using a Completely Randomized Design (CRD) with 4 treatment levels, namely Growmore Fertilizer (2 gr/l) as a control and vitamin B1 concentration (1 ml/l, 2 ml/l, 3 ml/l) then each -Each treatment was repeated 5 times to get 20 plants, each treatment consisting of 5 plant samples. The parameters used are root length, number of new roots, shoot height and number of shoots. The data obtained was analyzed using the one way anova test. The results of the research showed that Dendrobium sonia orchids treated with varying concentrations of vitamin B1, the parameters of root length, number of shoots, shoot height and average number of shoots had vegetative growth that did not look much different. In conclusion, vitamin B1 has no significant effect on the vegetative growth of Dendrobium sonia orchids.

Keywords: Dendrobium sonia, Vegetative Phase, Vitamin B1

Perbandingan Kualitas Pot Hitam dan Softpot Terhadap Pertumbuhan Vegetatif Anggrek Dendrobium sonia ersakul

2024-02-22T03:11:51+00:00

The aim of this research is to compare the quality of black pots and soft pots on the vegetative growth of the Dendrobium sonia ersakul orchid. The method used was perfect randomization with one treatment, namely black pot and soft pot. Data analysis used a two-way t-test at the 5% level. The results of the research show that using different types of pots can make a real difference to the parameters of plant height, length of shoots and number of new roots, but does not make a real difference to root length. The difference in the quality of the two pots is influenced by the level of water supply to the plant, plant drainage, and the level of oxygen absorption in the roots.

Keywords: Dendrobium Orchid, Vegetative Growth, Black Pot, Softpot

Kelimpahan Foraminifera Bentonik Besar

2024-02-28T13:08:58+00:00

The aim of this research is to determine the abundance of large benthic foraminifera in the study area. This research method is descriptive quantitative. There were 4 thin section samples used in this research, these samples came from cores at a depth of (36m – 39m). The results of the research showed that from the four incisions, 7 variations of large benthonic foraminifera genera were found, including, Spiroclypeus, Alveolina, Trillina hawchini, Cycloclypeus, Miogypsina, Heterostegina, and Assilina. Analysis of the abundance of large benthic foraminifera was carried out based on identification of the presence of foramnifera in each thin section sample. It is known that the thin section sample with the highest abundance of large benthonic foraminifera was in the code section sample (38m – 39m) with a total abundance of 9 individuals, consisting of 4 different genera of large benthonic foraminifera. In conclusion, the abundance of large benthic foraminifera tends to increase with increasing core depth.

Keywords: Large Benthonic Foraminifera, Genus, Abundance, Rajamandala

Respon Pertumbuhan Vegetatif Tanaman Kedelai (Gylcine max L.) Terhadap Tingkat Naungan yang Alami

2024-02-29T02:49:45+00:00

This research aims to determine the most effective growth response and shade level for vegetative growth of soybeans (Glycine max L.). The experimental design used was a Completely Randomized Design (CRD). ) with 2 factorials, namely factor I, namely N0: Control; N1 : 55%; N2: 65%; N3: 75%; and factor II, namely M1: soil + husks; M2: soil + cocopeat. The results showed that 55% shade (N1) had a significant effect on plant height and number of leaves, 75% shade (N3) had a significant effect on leaf area index, M2 (soil + cocopeat) had a significant effect on plant height, number of leaves and area index. leaf. In conclusion, the growth response of soybean plants to natural shade shows significant growth in plant height, number of leaves, leaf area index and level of shade. The most effective is N1 which has a significant effect on plant height and number of leaves. Apart from that, there are recommendations for choosing a more appropriate media for soybean plants so that their growth and development is more realistic.

Keywords: Gylcine max L., Soybeans, Cultivars, Shade, Growth

Optimasi Pertumbuhan Anggrek Dendrobium sp. Fase Seedling dengan Pemberian Variasi Dosis Pupuk

2024-03-11T12:28:42+00:00

This research aimed to find out what variations in fertilizer doses are optimal to stimulate the growth of orchids in the seedling phase. The method used was a Completely Randomized Design (CRD) method with one factor, namely the concentration of Grow More leaf fertilizer with 3 treatments and 5 replications. The treatments given were fertilizer concentrations of 0.2 g/200 mL, 0.4 g/200 mL, and 0.6 g/200 mL. The data obtained were analyzed using Anova analysis with an accuracy of 0.05. The research results showed that variations in fertilizer doses had no significant effect on the research parameters of plant height, new shoot height and new root length. Meanwhile, it has a real effect on the parameters of the number of new roots. In conclusion, a fertilizer concentration of 0.6 g/ 200 mL is the optimal concentration for the growth of the number of new roots of Dendrobium orchids in the seedling phase.

Keywords: Orchid, Dendrobium, Fertilizer Dosage, Seedling Phase

Pemanfaatan Sumber Daya Alam Kabupaten Lebong: Sumber Daya Pangan Rebung Bambu sebagai Bahan Baku Utama Pembuatan Lemea (Makanan Tradisional Kabupaten Lebong)

2024-03-13T04:03:14+00:00

This research aimed to determine the use of natural resources as food in Lebong Regency which can later be used as a learning resource for students in science learning. This research uses a survey method conducted in Lebong Regency, Bengkulu Province. The data collection technique used was interviews with the people of Lebong Regency and the Central Statistics Agency (BPS) of Lebong Regency regarding natural resources and their use. Data obtained from interviews were analyzed descriptively. The results of the research show that the people of Lebong Regency utilize natural resources, namely bamboo which is used as the main raw material in making lemea (a traditional food of the Rejang Tribe in Lebong Regency). The bamboo used in the process of making Lemea is a type of ship bamboo. The part of bamboo used in the process of making Lemea is bamboo shoots (young bamboo shoots). Lemea is a typical food of the Rejang tribe in Bengkulu Province where the main ingredient of lemea is chopped fermented bamboo shoots (young bamboo). The ingredients for the lemea mixture vary from region to region, some use river fish, red chilies, bay leaves and lemongrass. The science content that students can learn in this Lemea product is fermentation in biotechnology material.

Keywords: Bamboo, Lebong, Lemea, Bamboo Shoots, Natural Resources

Studi Keragaman dan Habitat Gastropoda di Daerah Litoral Muara Sungai Ketahun Bengkulu Utara

2024-03-25T07:42:18+00:00

This research aims to identify the abundance, diversity, dominance and evenness of gastropods at the mouth of the Ketahun River, North Bengkulu. The method used is the "purposive" method. The sampling location was divided into 4 (four) stations, namely in the tidal area and on the right and left in the downstream part of the estuary. The sampling technique uses transects, at each station measuring 20m. Gastropod data analysis uses the Shannon Wiener index, Simpson index, and Pielou index. The research results showed that at the mouth of the Ketahun river, 18 species of gastropods were obtained consisting of 7 genera and 3 families. The diversity index shows, a) station I has an index value of 1.81 (medium category); b) station II has an index value of 0.49 (low category); c) station III has an index value of 1.89 (medium category); d) station IV has an index value of 0.82 (low category). The dominance index shows, a) station I has an index value of 0.23 (low category); b) station II has an index value of 0.70 (medium category); c) station III has an index value of 0.19 (low category); d) station IV has an index value of 0.63 (medium category). The evenness index shows, a) station I has an index value of 0.62 (high category); b) station II has an index value of 0.17 (small category); c) station III has an index value of 0.65 (high category); d) station IV has an index value of 0.28 (small category). The most common gastropod found is the genus Clithon with a total of 1369 individuals. Abundance, diversity, dominance and evenness are determined by abiotic parameters and environmental conditions such as substrate and water quality.

Keywords: Bengkulu, Gastropods, Ketahun River

Uji Kuantitas Kadar Antioksidan dan Kandungan Vitamin C Kombucha Secang (Caesalpinia sappan L.) dengan Pemanis Stevia berdasarkan Variasi Lama Fermentasi

2024-03-26T08:09:08+00:00

This study aimed to determine the antioxidant levels and vitamin C content of secang kombucha with stevia sweetener based on variations in fermentation time. This research used experimental methods and a Completely Randomized Design with 1 factor, namely fermentation time of 11 days and 13 days with 3 replications each. Data analysis uses quantitative descriptive methods. The results of the research showed that the antioxidant content of secang wood kombucha with stevia sweetener was the highest in the 13 day fermentation treatment, namely 79.14%. Meanwhile, the highest vitamin C content of secang wood kombucha with stevia sweetener was in the 13 day long fermentation treatment, namely 39.14 mg/100g.

Keywords: Antioxidants, Fermentation, Kombucha, Secang, Vitamin C

Pengaruh Pakan Limbah Jeroan Ikan Nila dan Limbah Tomat Terhadap Pertumbuhan serta Kadar Protein Maggot BSF (Hermetia illucens)

2024-04-08T12:50:13+00:00

This research aims to analyze the effect of tilapia offal waste and tomato waste on the growth and protein levels of BSF maggots. This research analyzes the ratio of mass, length and thickness as well as the protein content of maggots on the influence of the feed used. This research used a Completely Randomized Design (CRD) consisting of 5 treatments with 3 repetitions. The results showed that the P1 100% fish treatment was the best variation for mass, namely 0.27. Treatment P1 100% fish is the best variation for length, namely 22.40. Treatment P1 100% fish and P2 75% fish and 25% tomatoes is the best variation for thickness, namely 5.85, and Treatment P4 25% fish and 75% tomatoes is the best variation for protein content, namely 22.01%. In conclusion, feeding fish waste and tomato waste on growth and protein content in BSF maggots affects mass, length, thickness and protein content.

Keywords: Protein Content, Fish Offal Waste, Maggot, Tomato

Kriopreservasi Sperma Manusia: Systematic Review

2024-04-19T23:18:59+00:00

This study aims to identify the types of methods and effects of human sperm cryopreservation. This review was written using a literature review method from international databases such as Scopus and PubMed. The results of the research show that by choosing a cryopreservation method, choosing a cryoprotectant agent such as TAT-PRDX2, canthaxanthin, or Holotheria parva coleomic extract, can increase sperm motility, viability and integrity after cryopreservation, the right cryoprotectant agent can defend cells from oxidative stress and fragmentation DNA.

Keywords: Cryopreservation, Human, Sperm