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All Journal GEMA TEKNOLOGI METANA agriTECH Journal of Vocational Studies on Applied Research Jurnal Rekayasa Proses Jurnal Sains dan Kesehatan Dinamika Kerajinan dan Batik: Majalah Ilmiah Palawa Jurnal Pengabdian Kepada Masyarakat

Vita Paramita

Program Diploma Teknik Kimia, Fakultas Teknik, UNDIP. Jl. Prof. Sudarto, SH Tembalang, Semarang 50239

Author-ID : 340179

Agriculture, Biological Sciences & Forestry Arts Automotive Engineering Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Education Energy Engineering Environmental Science Immunology & microbiology Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Medicine & Pharmacology Physics Public Health Social Sciences Other

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Quality Analysis of Liquid Soap Formulation Made from Virgin Coconut Oil with Addition of White Tea Extract Meizalin, Anna Amelia; Paramita, Vita
Journal of Vocational Studies on Applied Research Volume 3, Issue 2, Year 2021 (October 2021)
Publisher : Vocational College of Universitas Diponegoro

The production of bath soap based on natural ingredients is still rarely found in the market. Many in circulation still use synthetic materials as active ingredients. In this soap-making formulation using natural antioxidants in the form of white tea extract, anti-oxidants from plant extracts are usually added as additives (1-8% of the final soap composition). The research method used is a response surface methodology with a Central Composite Design (CCD) design. The resulting liquid soap product will be analyzed including physicochemical tests and organoleptic tests. Soap with the most appropriate quality according to SNI fell on the 4th variable, with the addition of KOH of 67 grams and a reaction time of 35 minutes. Variable soap 4 has a pH of 10, a free alkali content of 0.0541%, and an unsaponifiable fat content of 0.37%.

Optimization On Subcritical Fluid Extraction Of Zingiberene Paramita, Vita; Yulianto, Mohamad Endy; Hartati, Indah; Bahrudin, Udin; Broto, R. T. D. Wisnu
Journal of Vocational Studies on Applied Research Volume 1, Issue 1, Year 2019 (April 2019)
Publisher : Vocational College of Universitas Diponegoro

The establishment of subcritical fluid application for zingiberene extraction was studied by employing water as a green solvent. The zingiberene content was observed by using Liquid Chromatography-Mass Spectrofotometry and regarding to the independent variable of temperature, extraction time, ginger-solvent ratio and aging time. By applying subcritical water, the critical value of zingiberene content obtained was 0.036%. This value was approached by the surface modeling of alpha for rotatability design which performed at 125 oC, 20 min of extraction time, 0.08 of ginger to solvent ratio and 9 min of aging time of extraction parameters. The surface modeling was validated by plotting the observed and predicted value of zingiberene content and evidenced by the value of R-square at 0.76.

The Effect of Surfactant, Time and Speed of Stirring in the Emulsification Process of Soybean Oil in Water Hariyatno, Shelvin Putri; Paramita, Vita; Amalia, Rizka
Journal of Vocational Studies on Applied Research Volume 3, Issue 1, Year 2021 (April 2021)
Publisher : Vocational College of Universitas Diponegoro

Homogenization is the process of uniform particle size in an effort to maintain the stability of a mixture which is formed from 2 incompatible phases or so-called emulsion.Emulsion is a complex system consisting of a liquid phase which is spread over another immiscible liquid phase which is usually through mechanical shear. All emulsions are thermodynamically unstable due to contact between oil and water molecules. However, emulsions can be stabilized rapidly in the presence of emulsifying or thickening agents such as Tween 20 and Tween 80. Apart from the addition of emulsion stabilizing surfactants, the speed of stirring also has an effect in stabilizing the emulsion. This research was conducted to determine the effect of stirring speed and addition of surfactants Tween 20 and Tween 80 on the stability of soybean oil emulsion. The results of density, viscosity, stability, and microscopic tests showed that the emulsion was treated with the addition of tween 80 with a stirring speed of 30.

Optimization of Pb(II) Metal Adsorption on Pomelo Peel Biosorbent by Immobilization in Ca-Alginate Rasyid, Zulfa Wulandari; Paramita, Vita
Journal of Vocational Studies on Applied Research Volume 4, Issue 1, Year 2022 (April 2022)
Publisher : Vocational College of Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/jvsar.v4i1.14624

Industrial wastewater is a source of water pollution that dominates today. Wastewater is known to cause damage to the environment, health and threatens the availability of clean water. Industrial wastewater is a problem because it contains a lot of dangerous heavy metals, one of which is Lead or Pb(II).' Adsorption technology has become one of the most exciting technologies because of its good performance. Adsorption media currently popular for the study is adsorption using agricultural waste. One of the agricultural wastes that can be used as biosorbent is grapefruit peel (Citrus maxima). The functional groups in grapefruit peel are ether, pedophilic, carboxyl, carbonyl, and hydroxyl. These functional groups are essential in binding heavy metals from the aquatic environment. In this study, grapefruit peel was modified into a Ca-alginate immobilized biosorbent. The analyzes that will be carried out include the characteristics of the biosorbent, namely the water content and ash content test, the FTIR test to determine the functional groups contained in the biosorbent, the SEM-EDX test to assess the appearance of the biosorbent, as well as analysis of the initial and final levels of Pb(II). Based on the results obtained, the best percentage decrease in Pb(II) levels was obtained with operating conditions of pH 4.7, contact time of 90 minutes, and Pb(II) concentration of 100 mg/L with a percentage decrease in Pb(II) levels of 89%.

Temperature Optimization and Addition of Aloe Vera Gel as Antibacteria In Coconut Oil-Based Liquid Soap Rahman, Azizah; Paramita, Vita
Journal of Vocational Studies on Applied Research Volume 3, Issue 2, Year 2021 (October 2021)
Publisher : Vocational College of Universitas Diponegoro

This study aims to determine the optimization of the ratio of coconut oil to KOH and temperature in the manufacture of liquid soap. In this study, the saponification reaction was used by reacting coconut oil with a strong base of KOH. The mole ratio between coconut oil and KOH used is 1:3, 1:4 and 1:5. The temperature used 3 points, there are 30oC, 40oC, and 50oC. Parameters observed were free fatty acid, pH, free alkali content, unsaponication fat content, density, and viscosity. The best results in the physiochemical test were running 4 (KOH ratio 5 and temperature 50oC) with pH 8, free alkali content of 0%, unsaponication fat content of 0.00175%, density 1.02 g/ml, viscosity 715.87 cP, and 1% free fatty acids. The critical value for the optimization of the liquid bath soap formula on the level of unsaponification fat based on RSM data is achieved at a KOH ratio of 4.28758 with a temperature of 62.40793oC.

Reducing COD Levels of Batik Waste Using Chicken Egg Shells and Tea Dregs Puspita, Anggrek Sinar; Fatmawati, Zulaikhah; Paramita, Vita
Journal of Vocational Studies on Applied Research Volume 4, Issue 1, Year 2022 (April 2022)
Publisher : Vocational College of Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/jvsar.v4i1.14622

In the last ten years, the batik industry has experienced very rapid growth. This provides benefits but also has adverse effects on humans and the environment because the sector generates waste. Batik liquid waste contains chemical compounds that can increase the COD value. Alternative treatment of liquid waste from batik factories is the biosorption process using biosorbent from chicken egg shells and tea dregs. This study aimed to investigate the effect of variations in the biosorbent ratio, contact time, and initial pH of the sample on changes in COD. In this study, the acid activation method was used to increase the ability of the biosorbent to absorb the COD content in the batik industry wastewater. This research method uses the Response Surface Methodology (RSM) method, where the biosorbent made is then contacted with batik wastewater to determine the decrease in COD levels contained in it. The critical value was achieved when the material ratio was 12.3270 grams of eggshell, with a contact time of 47.1281 at a pH of 1.71281. The best results were obtained in sample 5 with a biosorbent ratio of 11.25:3.75, contact time of 50 minutes, and initial pH 2 with a decrease in COD levels of 77%.

Economic Factor on the In Situ Vanillin Enzymatic Formation from the Green Pods Vanilla Hartati, Indah; Ardi, Pradipta Risma Rukma; Milzam, Muhammad; Paramita, Vita
Journal of Vocational Studies on Applied Research Volume 1, Issue 1, Year 2019 (April 2019)
Publisher : Vocational College of Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/jvsar.v1i1.4294

This work proposed a study of a direct enzymatic of vanillin formation by using rumen liquid which has enzymatic capability for tissue disruption of vanilla green pods to avoid the curing process. Application of enzymes during the formation of vanilla aromas and its extraction present nice opportunity to improve productivity, as the enzymatic reaction possibly substitute the microbial process in the traditional fermentation. Green vanilla pods were applied for the direct enzymatic extraction of vanillin, while liquid rument provide cell wall degrading enzyme in order to support the hydrolysis process (destruction) of cell wall. Glucovanillin were contacted with the β-glucosidase in the green pods due to the desruction of the cell wall, followed by the formation of glucovanillin into vanillin. Vanillin content of vanilla green pods was found higher in which by treating the vanilla green pods at 30 °C.

Implementation of Ambon Banana Peel (Musa Paradisiaca) as Foaming Agent of Banana Fruitghurt using Foam Mat Drying Method Putry, Cindyana; Paramita, Vita; Hartati, Indah
Journal of Vocational Studies on Applied Research Volume 4, Issue 2, Year 2022 (October 2022)
Publisher : Vocational College of Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/jvsar.v4i2.15821

Fruitghurt is a product of lactic acid fermentation, namely L. bulgaricus and S. Thermopillus in an acidic state enriched by nutrients from fruit such as Ambon banana but has a short shelf life. Bananas have a role as an additional nutrient in the form of glucose which then becomes a nutrient for lactic acid bacteria. Foam mat drying itself is a drying method that is better than other types of drying because it does not require large production costs and protects the structure of the material through the formation of foam. Application of foam mat drying on fruitghurt using Ambon banana peel extract as a foaming agent is expected to increase the shelf life of fruitghurt as well as an alternative foaming agent derived from vegetable protein Ambon banana peel contains a protein content of about 0.64% when bananas experience a good level of maturity. In the manufacture of fruitghurt powder, the research method used is Response Surface Methodology (RSM) with variables changing the concentration of banana peel extract as a foaming agent, the concentration of maltodextrin as a binder and mixing time. The resulting fruitghurt powder will be analyzed for water content, total acid analysis and pH analysis. The research data were processed using minitab 19 software. The best fruitghurt powder results were found in the 9th variable, namely the minimase variable, where the optimum conditions were banana peel extract concentration of 2.38 ml, maltodextrin concentration of 30 grams and stirring time of 20 minutes. Fruitghurt variable 9 has a pH of 5 after drying which is in accordance with SNI 01-2981-2009, water content is 0.64% and total acid is 1.08%

Utilization of Alurities Trisperma Oil as Biodiesel Sari, Gustry Ratna; Satrio, M. Akbar; Mulyaningsih, Rizki; Irene, Imer Ayu; Paramita, Vita
Journal of Vocational Studies on Applied Research Volume 2, Issue 1, Year 2020 (April 2020)
Publisher : Vocational College of Universitas Diponegoro

Biodiesel is one of the solutions to the many uses of fossil fuels. Biodiesel itself is a fuel derived from vegetable oil (plant or vegetable fat) called biofuel. In this study, biodiesel used is based on sunan candlenut. The purpose of this study was to determine the optimum time conditions (1.5; 2; 2.5 hours) and the comparison of solvents with candlenut (0.25; 0.2; 0.17) in the manufacture of candlenut oil, as well as knowing the process of making biodiesel. The method used is the manufacture of hazelnut oil by extraction using Soxhlet. The resulting oil was esterified using methanol with sulfuric acid catalyst at a reaction temperature of 60 0C for 60 minutes. The volume ratio between oil and methanol is 4: 1 followed by transesterification at 50 0C for 30 minutes. In the research, the results were optimum time and the number of solvents for good extraction at 2 hours and the ratio of solvents to hazelnut was 0.17. The resulting biodiesel density was 0.82 gr / ml, viscosity was 4.07Cp, FFA value was 1.4%, and the saponification rate was 274.4. From these data it can be said that the Biodiesel produced is approaching the Indonesian National Standard.

The Effect of HLB Surfactant Value on The Characteristics of Emulsion Biodiesel Palm Oil Using Homogenizer Damayani, Intan Ardina; Paramita, Vita; Yulianto, Mohamad Endy
Journal of Vocational Studies on Applied Research Volume 3, Issue 1, Year 2021 (April 2021)
Publisher : Vocational College of Universitas Diponegoro

The process of making water emulsion in palm oil biodiesel is assisted by using two types of surfactants with different HLB values, namely Tween 80 and Span 80. This study aims to determine the characteristics of palm oil biodiesel emulsion made using a homogenizer with different HLB values, surfactant composition and water content in each sample. Density, viscosity, stability and microscopy tests were carried out to determine the characteristics of palm oil biodiesel emulsion. The results were obtained in the form of the highest density and viscosity values found in samples with high HLB values, surfactant composition and water content, while for stability test results were found in samples with low HLB values, surfactant composition and low water content. This shows that the difference in the value of HLB used will affect the amount of surfactant composition and moisture content in the sample composition and will affect the density, viscosity and stability of the palm oil biodiesel emulsion formed.

Co-Authors Adiatma, Afifta L Aini, Falasifah N Aji Prasetyaningrum Allamah, Labibah Ardi, Pradipta Risma Rukma Ardi, Pradipta Risma Rukmana Arifah, Difa Al Asari, Yunita Dwi Berkah, Fitroh Bawa Broto, R. T. D. Wisnu Damayani, Intan Ardina Devanda, Ilyas Rabbani Didik Ariwibowo Elok Faiqoh Fatmawati, Zulaikhah Fauzi, Nurrohmat FS Nugraheni S Hariyatno, Shelvin Putri Heny Kusumayanti Hermawan Dwi Ariyanto Hidayatul Masruroh Ikmalanas, Salma Imamsyah, Ragil Agnes Safira Indah Hartati Irene, Imer Ayu Karyadi, Nabila Putri Khasanah, Vina Nafidzatul Kurnianto, Ade Kurniawati, Yesi Laila Faizah Achmad, Laila Faizah Latif, Abdullah Leviana, Wilandika Malikah, Anna Irdatul Margaretha Tuti Susanti Masruroh, Ulla Disky Meizalin, Anna Amelia Milzam, Muhammad Mohamad Endy Y Yulianto Muhammad, Firnanda Rayyan Mulyaningsih, Rizki Namira, Zahra Rahma Nisa, Qurrotun A'yuni Khoirun Nolalita, Aureliya Helmaleni Nugraheni, Fransisca Sri Nurlaili, Fitri Dwi Nur’ Aini, Laela Oktaviani, Rosiana Pradasari, Aprilina Siska Pradipta, Tito Prameswari, Nida Hamidah Pramudika, Satya Pranita, Zahra Aumy Pudiastuningtyas, Nurul Pujiastuti, Alfyan Puspita, Anggrek Sinar Putry, Cindyana Qorina, Zahra Nurjannati Rahman, Azizah Rasyid, Zulfa Wulandari Riadhus Shalihin, Muhammad Zaki Rizka Amalia Rizka, Rashinta Sansabhilla, Faradiva Santoso, Shafira Ardaneswari Sapatra, Enrico Fendy Saputri, Arum Dyah Saputri, Rizky Yunita Sari, Gustry Ratna Sari, Ratmi Rahma Satrio, M. Akbar Shalihin, Muhammad Zaki Riadhus Siregar, Vynda Dindasari Sitio, Septi Enjelina Sovia, Ghina Tasmalia, Ria Udin Bahrudin, Udin Wahyunimgsih, Wahyunimgsih Wibisono, Enggar Sulistyo Wikanta, Deddy K Yando, Adhit Mardita Zainal Abidin

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