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Journal : Bioscientist : Jurnal Ilmiah Biologi

Pengaruh Variasi Persentase Pakan Ampas Tahu dan Kotoran Sapi terhadap Pertumbuhan Cacing Tanah (Lumbricus rubellus) Heryensi, Elza; Ruyani, Aceng; Wardana, Rendy Wikrama; Karyadi, Bhakti; Sutarno, M.
Bioscientist : Jurnal Ilmiah Biologi Vol. 12 No. 1 (2024): June
Publisher : Department of Biology Education, FSTT, Mandalika University of Education, Indonesia.

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33394/bioscientist.v12i1.11246

Abstract

This research was carried out from November to December 2023, at the Ruyani Life Sciences Learning Resources (SBIH). The aim of this research was to determine the effect of feeding tofu dregs and cow dung on the growth of earthworms (Lumbricus rubellus). The method used in this research was an experimental method, namely a Completely Randomized Design (CRD) with 6 feed treatments + 3 repetitions for continuation of undergraduate student research and 6 feed treatments + 3 repetitions for initiation. Data analysis used the Kruskall-Wallis nonparametric statistical test with Asymp. Sig. values. ≤ 0.05, and continued with the Mann-Whitney test. The research results show that the value of Asymp. Sig. parent biomass, offspring biomass, number of parent individuals, and number of Lumbricus rubellus offspring in sequence, in the 1st to 4th week of follow-up research Asymp. Sig. values. namely 0.086; 0.036; 0.140; and 0.064. In the 5th to 8th week of further research, the Asymp. Sig. value. namely 0.168; 0.047; 0.176; and 0.095. And in the 5th to 8th weeks of the research, the Asymp. Sig. value was initiated. namely 0.062; 0.010; 0.434; and 0.013. The conclusion was that feeding tofu dregs and cow dung had no real effect on parent biomass and number of parent individuals, and there was a real difference in offspring biomass and number of Lumbricus rubellus offspring in the initial study.
Pengaruh Penambahan Nutrient (NPK dan Pupuk Urea) terhadap Bioethanol Hasil Fermentasi Biji Alpukat (Persea americana Mill.) Putri, Zakyya Septiana; Ruyani, Aceng; Uliyandari, Mellyta; Wardana, Rendy Wikrama; Sukarso, A. A.
Bioscientist : Jurnal Ilmiah Biologi Vol. 12 No. 1 (2024): June
Publisher : Department of Biology Education, FSTT, Mandalika University of Education, Indonesia.

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33394/bioscientist.v12i1.11283

Abstract

Bioethanol is an energy source obtained through fermentation. In bioethanol production, Persea americana seeds are used as a fermentation medium because they contain lots of carbohydrates. This research aims to determine the effect of additional nutrients (NPK and urea fertilizer) required by Saccharomyces cerevisiae by varying the nutritional variables in the form of NPK and urea fertilizer. The process of making bioethanol goes through stages: making Persea americana seed flour, hydrolysis process using 6% HCl, then fermentation process, and distillation process. This research was carried out with the addition of Nutrients in the form of NPK and Urea Fertilizer with 5 treatments, namely: A) 100% yeast (no addition of Nutrients); B) 100% NPK (4 g); C) 100% Urea Fertilizer (4 g); D) 50% NPK and 50% Urea Fertilizer (4 g NPK and 4 g Urea Fertilizer); and E) 75% NPK and 25% Urea Fertilizer (3 g NPK and 1 g Urea Fertilizer), and varying the length of fermentation time to 13, 19, and 25 days. Success parameters are assessed through the bioethanol yield produced by each treatment. The research results showed that the highest bioethanol (29.7 ± 0.47%) was composition E (NPK 75% and Urea Fertilizer 25%) with a fermentation time of 25 days.
Co-Authors ACENG RUYANI Anggraini, Yestilia Aniliawati, Ur anjelie, Anggi April Yanti, Fitri Ardina, Mona Ariefa Primair Yani Ariefa Primairyani, Ariefa Ayub, Yenni Novita Lestari BHAKTI KARYADI Binti Abdul Rahim, Suzieleez Syrene Cantika, Pricilia Debi Defianti, Aprina Efriyani, Veni Efriyani Eka Saputra Eko Risdianto Elsi Adelia Fitri Endang Widi Winarni Fadhilah, Annisa Alya Farid, Muchammad Firmanul Catur Wibowo Fitri April Yanti, Fitri April Fitriana, Febi Hadirama, Khanna Hamzah, Syukri Handayani, Rinda Fitri Hayuni Retno Widarti Hendri Saputra Henny Johan Herawati, Asmida Heryensi, Elza I Wayan Dharmayana Ida Lestari Indra Sakti Indriani, Lativa Dwi Irwan Koto, Irwan Iwan Setiawan Johan , Henny Kasim, Hafia Ameliyah Lestari, Novia Ayu Lia Anggraini Liliasari , Lisantia, Risky Novi M. Anas Thohir M. Lutfi Firdaus, M. Lutfi Mayub, Afizal Mayub, Afrizal Medriati, Rosane Nahadi Nirwana, Nirwana Noviana, Noni Nulhakim, Lukman Nursa'adah, Euis Nursaadah, Euis Nursa’adah, Euis Wikrama P. C. Tjiang Parlindungan, Deni Partikasari, Rika Pathonawiratama, Gustin Pistira, Pistira Pujianto, Dian Puspita Sari, Hesi Putra, Syalendra Putri Anjarsari Putri, Siti Meizhuri Aulia Putri, Zakyya Septiana Rambat Nur Sasongko Rotami, Ladya Ruyani, Aceng Wikrama Saprudin Saprudin, Saprudin Sartika, Rita Sathasivam, Renuka V. Setiani, Winda Sudarwan Danim Sudirman Sudirman Sukarso, A. A. Sutarno Sutarno Sutarno, M Sutarno, M. Thoha Firdaus Thohir, M Anas Tungga, Nora Kumala Uliyandari, Mellyta Umaya Umaya, Umaya Utomo, Niko Veronica, Liza Christine Walid, Ahmad Wulandari, Fenni Krisna Yanti, Isya Vira Yunitasari Yunitasari, Yunitasari