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All Journal Konversi Pena Justisia: Media Komunikasi dan Kajian Hukum Jurnal Penelitan Mahasiswa Indonesia
I Putu Andika Putra, I Putu Andika
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Religion Arts Humanities Education Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice

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PENGARUH KONSENTRASI HCl DAN Ph PADA EKSTRAKSI PEKTIN DARI ALBEDO DURIAN DAN APLIKASINYA PADA PROSES PENGENTALAN KARET Ristianingsih, Yuli; Nata, Iryanti Fatyasari; Ansari, Dian Sylvana; Putra, I Putu Andika
Konversi Vol 3, No 1 (2014): April 2014
Publisher : Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/k.v3i1.135

Abstract

Abstrak: Durian adalah tanaman yang tahan terhadap iklim kering sehingga dapat tumbuh di daerah tropis seperti Indonesia. Albedo durian merupakan sumber pektin yang potensial karena di dalamnya terkandung senyawa pektin. Untuk menguraikan pectin dalam albedo durian dapat dilakukan dengan proses ekstraksi asam karena kemungkinan terjadinya pectin jauh lebih sedikit daripada ekstraksi basa. Pada penelitian ini akan dilakukan ekstraksi pectin dengan bahan baku albedo durian yang bertujuan untuk mengetahui pengaruh variasi kosentrasi pelarut dan PH dari albedo durian, mendapatkan kondisi operasi optimum dari ekstraksi pectin albedo durian dan membandingkan data waktu pengentalan karet dengan menambahkan pectin atau tanpa pektin. Penelitian dilakukan dengan waktu ekstraksi 60 menit dengan temperatur ekstraksi 90 0C dan massa albedo durian 20 gram. Variasi perubah yang digunakan adalah konsentrasi pelarut HCl (0,2; 025; 0,3 dan 0,35N) dan variasi PH (1,2; 2; 2,5 dan 3). Pectin yang diperoleh kemudian diaplikasikan untuk proses pengentalan karet dengan variasi pectin yang digunakan adalah sebagai berikut (1:5; 2:5; 3:5 dan 4:5). Kadar pektin yang didapat pada penelitian ini berkisar antara 3,09 g-17,91 g. Kadar metoksil yang dihasilkan dari penelitian ini adalah 2,430%-3,13%, sedangkan kadar galakturonat yang dihasilkan dalam penelitian ini adalah 67,65%-82,02% dan waktu pengentalan karet tercepat adalah 5 menit dengan rasio pectin dan karet adalah 5:5. Kata kunci : Pektin, ekstraksi asam, metoksil, galakturonat Abstract: Pectin is a complex polysaccharides compound which contained in plant cell walls. It is used in food manufacturing processes, adsorbent for waste water treatment and coagulant for rubber industry. Albedo durian was one of the potential sources of pectin, because albedo durian is consist of pectin compound. Acid extraction process was used to decompose pectin compound which contained in albedo durian. In this research, twenty grams of albedo durian was reacted with hydrochloric acid using stirred tank reactor. This process was conducted at temperature 90 0C for 1 hour in various solvent concentration and PH. The purpose of this research was to study the effect of solvent concentration and PH in pectin extraction process and the effect of adding pectin in process of latex coagulation. The result showed that the higher PH and solvent concentration, the higher yield of pectin. The maximum yield of pectin which was obtained in this research is 89.55%. The methoxyl contain and galacturonic which was obtained in this research between 2.430-3.13% and 67.65-82.02%, rescpectively. The Minimum time for latex coagulation about 5 minute using ratio pectin and latex 5:5.              Keywords : Pectin, acid extraction, methoxyl, galacturonic
Implementasi Model Pembelajaran Problem Based Learning Untuk Meningkatkan Hasil Belajar Pjok Pada Materi Bola Basket Putra, I Putu Andika; Adi, I Putu Panca; Dartini, Ni Putu Dwi Sucita
Jurnal Penelitian Mahasiswa Indonesia Vol. 4 No. 4 (2024): November
Publisher : STKIP AGAMA HINDU SINGARAJA

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Abstract

This study aims to determine the improvement of learning outcomes (PJOK) through basketball material for Class X2 students of SMA Negeri 9 Denpasar by implementing the Problem Based Learning learning model. This research is a type of classroom action research. The subjects of this study were class X2 students of SMA Negeri 9 Denpasar, while the object of the study was basketball shooting and passing material with the implementation of the Problem Based Learning learning model. Data were taken by means of test observation of passing technique movements, shooting techniques, with the assessment format of passing techniques, shooting techniques, on cognitive and psychomotor aspects. Data were analyzed using Descriptive Statistics analysis. The results of the study showed that the implementation of the Problem Based Learning learning model can improve learning outcomes (PJOK) through basketball for Class X2 students of SMA Negeri 9 Denpasar in the 2023/2024 Academic Year. It can be seen in cycle I and cycle II that the percentage increase in PJOK learning outcomes is quite significant. So the results of PJOK learning in cycle I, the number of students who completed was 14 people and those who did not complete were 22 people. Meanwhile, in cycle II, the number of students who completed was 33 people and 3 people received average or sufficient scores.
Development of the Archipelago Capital and its Impact on the Existence of Traditional Land Putra, I Putu Andika; Sadnyini, Ida Ayu
Pena Justisia: Media Komunikasi dan Kajian Hukum Vol. 24 No. 1 (2025): Pena Justisia
Publisher : Faculty of Law, Universitas Pekalongan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31941/pj.v24i1.6820

Abstract

The agrarian disputes linked to the development of the new capital continue to escalate, characterized by the forced eviction of residents and the appropriation of land belonging to indigenous communities. This research employs normative methods, utilizing a statutory, historical, and conceptual approach. The aim is to investigate, study, and analyze the legal politics surrounding the relocation and construction of the national capital and examine efforts to protect customary land and support Indigenous communities throughout this process.The findings indicate that the move of the National Capital from Jakarta to East Kalimantan is fundamentally intended to enable future governments to act consistently and to avoid various paradoxes in pursuing the nation’s goals of achieving a prosperous and equitable Indonesia with a sustainably growing economy. Efforts to safeguard Indigenous Communities and their customary land during the development of the new capital include: 1) the establishment and prompt ratification of legislation concerning Indigenous Communities; 2) the provision of adequate compensation and guarantees for the livelihoods of Indigenous Communities who are landowners and are affected during the land acquisition process for the new capital; and 3) measures to mitigate the impact of livelihood loss for Indigenous communities while preparing alternative means of livelihood
Co-Authors Dian Sylvana Ansari, Dian Sylvana I Putu Panca Adi Iryanti Fatyasari Nata, Iryanti Fatyasari Ni Putu Dwi Sucita Dartini Sadnyini, Ida Ayu Yuli Ristianingsih