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All Journal Jurnal Teknik Kimia Jurnal Teknologi Pertanian CHEESA: Chemical Engineering Research Articles Journal of Functional Food and Nutraceutical Nusantara Science and Technology Proceedings AJARCDE (Asian Journal of Applied Research for Community Development and Empowerment) Serambi Engineering
Santi, Sintha Soraya
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Agriculture, Biological Sciences & Forestry Chemical Engineering, Chemistry & Bioengineering Chemistry Computer Science & IT Earth & Planetary Sciences Economics, Econometrics & Finance Education Energy Engineering Environmental Science Industrial & Manufacturing Engineering Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Medicine & Pharmacology Nursing

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KARAKTERISTIK GUGUS FUNGSI PADA POLIMERISASI SILIKA SELULOSA Santi, Sintha Soraya; Febriansyah, Harris; Chamida, Rida; Saputro, Erwan Adi
Jurnal Teknik Kimia Vol 15, No 2 (2021): JURNAL TEKNIK KIMIA
Publisher : Program Studi Teknik Kimia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33005/jurnal_tekkim.v15i2.2558

Abstract

bangannya. Berbagai penelitian telah dilakukan untuk mencari kondisi terbaik dalam prosesmendapatkannya. Silika selulosa didapatkan dari polimerisasi. Polimerisasi silika selulosa dipengaruhioleh kondisi modulus sodium selulosa (Na2.nSiO2), dimana n adalah rasio molar SiO2 dan Na2O. Padapenggunaan modulus yang rendah tidak dapat terjadi polimerisasi, di sisi lain dengan peningkatankosentrasi NaOH berpengaruh terhadap kemurnian silika sehingga menyebabkan tidak dapat terjadipolimerisasi. Untuk menghindari gagalnya proses polimerisasi maka ditambahkan Carboxy MethylCellulose (CMC) yang berfungsi sebagai zat pengikat. Tujuan dari penelitian ini adalah untukmengetahui karakteristik gugus fungsi pada polimerisasi silika selulosa pada berbagai modulus sodiumselulosa. Penelitian ini dilakukan dalam 4 tahap yaitu ekstraksi silika dari geothermal sludge, prosespolimerisasi silika selulosa, proses gellin, dan uji FTIR untuk mengetahui gugus fungsi penyusun silikaselulosa. Hasil yang didapatkanyaitu terdapat 4 gugus fungsi penyusun silika selulosa, antara lainalkohol (- OH) dengan rentang panjang gelombang 3433,98 – 3362,84(cm-1 ) ,karboksilat (-COOH)1637,20 – 1617,54 (cm-1 ), siloksan (Si-O-Si) 1065,89 -1042,73 (cm-1 ), dan silanol (Si-OH) 796,63 –788,43 (cm-1).DOI : https://doi.org/10.33005/jurnal_tekkim.v15i2.2558
Synthesis of Edible Film from Crab Shell Chitosan and Banana Peel Starch Santi, Sintha Soraya; Hariyanto, Ayu Puspita Kandhi; Hartono, Muhamad Dendy
Nusantara Science and Technology Proceedings 1st International Conference Eco-Innovation in Science, Engineering, and Technology
Publisher : Future Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11594/nstp.2020.0524

Abstract

Nowadays the use of plastics has become an important material so that the demand for home products as well as in industrial production is increasing. The activity of using plastics is increasing, causing complex environmental problems because it’s non-biodegradable. One of the biodegradable plastics is an edible film, which is a thin layer as a food packaging or coating which can be consumed together with the packaged product. In this research, the edible film was made using a synthesis method with raw materials such as crab shell chitosan, banana peel starch, and glycerol. Chitosan effects film reinforcement, starch functions as a film matrix former and glycerol also functions to increase the flexibility of the film. Through this research, it is hoped that the ratio of raw materials for the edible film including starch, chitosan, and glycerol can affect the characteristics of edible film such as tensile strength, percent elongation, percent of the solubility value in water.
Extraction of Tannin From Ketapang Leaves (Terminalia catappa Linn) Santi, Sintha Soraya; Irawati , Febriana; Prastica, Nita
Nusantara Science and Technology Proceedings 1st International Conference Eco-Innovation in Science, Engineering, and Technology
Publisher : Future Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11594/nstp.2020.0530

Abstract

Ketapang tree (Terminalia Catappa Linn) is a wild plant that trees is not including trees cultivated. Ketapang tree (Terminalia Catappa Linn) spread to almost all regions in Southeast Asia, including in Indonesia except Sumatra and Kalimantan are somewhat rare in nature. Study of Extraction Tannins from Ketapang leaves (Terminalia Catappa Linn) is done to find a solvent extraction and concentration on the extraction of tannins from leaves ketapang (Terminalia Catappa Linn) using ethanol solvent. The extraction process is done in a laboratory-scale batch and by the principles of solid-liquid extraction in a three-neck flask stirred for the specified time, namely 30, 60, 90, 120, 150 (minutes) with the concentration of solvent (ethanol) 60%, 70%, 80%, 85%, 90% as variable variables. While the weight of the sample remains variable 10 grams, ± 200 mesh particle size, extraction temperature 85 ? C, stirring speed 200 rpm, ethanol solvent type, settling time ± 30 minutes, the solvent volume 250 ml, distilled water adjuvant. The best condition of the tannin extraction using 85% ethanol for 120 minutes obtained 98.97% yield tannin concentration.
Groundwater Risk Assessment as an Impact of Land Use in the Groundwater Basin of Salatiga, Province of Central Java, Salatiga Kesuma, Destha A.; Purwanto, Purwanto; Putranto, Thomas T.; Rahmani, Tara Puri Ducha; Santi, Sintha Soraya
Nusantara Science and Technology Proceedings 1st International Conference Eco-Innovation in Science, Engineering, and Technology
Publisher : Future Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11594/nstp.2020.0545

Abstract

Variation of land use can affect the quality of groundwater and increase the potential for groundwater contamination. Physical environmental conditions that have a low sensitivity to contamination of groundwater, but the use of land which could potentially generate pollutants, such as industrial areas, residential, the agricultural activity can increase the risk level of contamination in the groundwater in the area. The purpose of this study is to develop a groundwater risk to contamination map in the shallow aquifer and to determine priority areas of groundwater quality monitoring in Salatiga Groundwater Basin. Groundwater risk to contamination map was prepared on aspects of land use and the degree of vulnerability of groundwater to contamination using DRASTIC methods and spatially was prepared by using Geographic Information System. Results of the assessment of risk levels obtained worth the risk index 93-204. The risk index values are grouped into five (5) classes of risk: low, low to medium, medium, medium-high, and high. The output of this research can be input for local governments in understanding the possible spread of groundwater contamination as well as choosing the right strategy for the conservation of groundwater resources in the Groundwater Basin of Salatiga.
STUDI PEMBUATAN ES KRIM YOGHURT SINBIOTIK DARI PROPORSI YOGHURT UWI UNGU : SUSU DAN PENAMBAHAN CARBOXY METHYL CELLULOSE Rosida, Rosida -; Santi, Sintha Soraya
Jurnal Teknologi Pertanian Vol 22, No 2 (2021)
Publisher : Fakultas Teknologi Pertanian Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.jtp.2021.022.02.5

Abstract

ABSTRAKUwi ungu mempunyai kandungan serat pangan dan inulin yang tinggi, sehingga dapat digunakan sebagai sumber prebiotik. Filtrat uwi ungu bersama susu sapi dapat difermentasi menjadi yoghurt sinbiotik. Selanjutnya yoghurt sinbiotik dan susu sapi diolah menjadi es krim untuk meningkatkan daya terima produk. Tujuan penelitian ini adalah mengetahui pengaruh proporsi yoghurt sinbiotik dan susu sapi serta penambahan CMC (Carboxy Methyl Cellulose) pada sifat fisikokimia dan organoleptik es krim yang dihasilkan. Penelitian ini menggunakan Rancangan Acak Lengkap pola faktorial dengan 2 faktor dan 2 ulangan. Faktor kesatu adalah proporsi yoghurt sinbiotik:susu (20:80, 30:70, 40:60) dan faktor kedua adalah penambahan CMC (0,4, 0,5, 0,6%). Data yang diperoleh dianalisis dengan analisa sidik ragam, bila terdapat perbedaan yang nyata dilanjutkan dengan Uji DMRT. Perlakuan terbaik diperoleh pada perlakuan proporsi yoghurt sinbiotik:susu sapi (30:70) dan penambahan CMC 0,6%, yang menghasilkan es krim dengan rata-rata total BAL (Bakteri Asam Laktat)  5,85 log CFU/ml, pH 5,20, overrun 38,35%, laju pelelahan 15,34 menit, viskositas  108,75 mPas, rata-rata skor tekstur 4,40, skor rasa 4,73, skor warna 4,47 dan skor aroma 4,60 (suka-sangat suka). Yoghurt sinbiotik yang dihasilkan mempunyai sifat fisikokimia dan dapat diterima konsumen sehingga dapat dikembangkan sebagai minuman kesehatan. ABSTRACT Purple water yam had high inulin and dietary fiber content, so it could be used as prebiotic source. The purple water yam filtrate together with cow’s milk can be fermented into synbiotic yoghurt. Furthermore the synbiotic yoghurt and milk were processed into ice cream in order to increase the acceptance of the product. The purpose of this study was to determine the effect of the proportion of synbiotic yogurt and cow's milk and the addition of CMC (Carboxy Methyl Cellulose) on the physicochemical and organoleptic properties of the ice cream produced. This study used Completely Randomized Factorial Design with 2 factors and 2 replications. The first factor was the proportion of synbiotic yogurt : milk (20:80, 30:70, 40:60) and the second factor was the addition of CMC (0.4, 0.5, 0.6%). The data obtained were analyzed by analysis of variance, if there was a significant difference, proceed with the DMRT test. The best treatment was obtained in the proportion of synbiotic yogurt:cow's milk (30:70) and the addition of 0.6% CMC, which resulted in ice cream with average total LAB (Lactic Acid Bacteria) of 5.85 log CFU / ml, pH of 5.20, overrun of 38.35 %, melting rate of 15.34 minutes, viscosity of 108.75 mpas, and average texture score of 4.40, taste score of 4.73, color score of 4.47 and aroma score of 4.60 (like-very like).  The resulting synbiotic yogurt has physicochemical properties and can be accepted by consumers so that it can be developed as a healthy drink.
Hypoglycemic and Hypocholesterolemic Effects of Lesser yam Synbiotic Yoghurt (Dioscorea Esculenta L) on Metabolic Syndrome Wistar Rats Rosida; Santi, Sintha Soraya
Journal Akademik Universitas Swiss German Vol. 4 No. 2 (Feb 2023)
Publisher : Swiss German University & Perhimpunan Penggiat Pangan Fungsional dan Nutrasetikal Indonesia (P3FNI)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33555/jffn.v4i2.111

Abstract

This study aims to determine the effect of consumption of lesser yam synbiotic yoghurt on glucose levels and blood lipid profiles of metabolic syndrome rats. Synbiotic yoghurt has positive effect on health such as increasing body immunity, lowering blood glucose and cholesterol levels. In this study, lesser yam synbiotic yoghurt was made from cow's milk and lesser yam extract with (1:1) proportion, sugar, skim milk and starter of lactic acid bacteria and then followed by bioassay test using experimental rats. The results showed that lesser yam synbiotic yoghurt can reduce glucose levels and improve the blood lipid profile of rats. The best treatment is to give 4 ml of synbiotic yoghurt per day which can reduce glucose levels and total blood cholesterol of metabolic syndrome rats. It can be concluded that lesser yam synbiotic yoghurt which had high levels of dietary fiber and inulin, had hypoglycemic and hypocholesterolemic effect.
Optimization of Particle Size and Addition of Vinasse Waste to Improve Characteristics of Rice Husk Charcoal Briquettes Santi, Sintha Soraya; Azzahra, Tsania Putri; Salfana, Dian Rizka; Pasang, Timotius
CHEESA: Chemical Engineering Research Articles Vol. 7 No. 1 (2024)
Publisher : Universitas PGRI Madiun

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25273/cheesa.v7i1.19575.36-46

Abstract

Biobriquettes are a biomass fuel with high calorific value. This study aims to determine the optimal conditions for the particle size of husk charcoal and the addition of vinasse waste as an independent variable, using the Response Surface Methodology and the Central Composite Design (CCD) method on Design Expert 13 software. The sample mixed with tapioca starch (8:1), which acts as an adhesive, and add vinasse waste in 3, 6, 9, and 12 mL amounts. Carbonization process, which is then mashed and sieved according to particle sizes of 20, 30, 40, 50, and 60 mesh. Then, the sample is mixed with tapioca starch as adhesive with the ratio of charcoal and adhesive 8:1 as well as vinasse waste in volumes of 3, 6, 9, and 12 mL. The resulting briquette samples were tested in the form of water content, ash content, and calorific value tests. The optimum conditions that have a significant effect on the response variable are the combination of particle size variables of 35.152 mesh and the volume of vinasse waste of 6.049 mL. The moisture content obtained was 6.696%., The ash content was 5.450%, and the calorific value was 5003.399 cal/g with a desirability value of 0.927 in the quadratic model.
Sintesis dan Karakterisasi Kalsium Fosfat dari Cangkang Bekicot dengan Metode Presipitasi Pangestu, Titan Obby; Damayanti, Savira Farizqy; Santi, Sintha Soraya; Muljani, Srie
CHEESA: Chemical Engineering Research Articles Vol. 4 No. 2 (2021)
Publisher : Universitas PGRI Madiun

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25273/cheesa.v4i2.8931.82-90

Abstract

Cangkang bekicot memiliki potensi sebagai bahan baku sintesis kalsium fosfat karena kandungan kalsium yang sangat tinggi, yaitu sekitar 99 %. Kalsium fosfat dapat diaplikasikan sebagai biomaterial karena sifatnya yang sama dengan jaringan penyusun tulang. Pada saat ini kebutuhan akan biomaterial sangat tinggi dan telah memberi dampak yang cukup besar terutama dalam bidang kedokteran ortopedi. Penelitian ini bertujuan untuk mengkaji karakteristik kalsium fosfat dengan menggunakan bahan baku cangkang bekicot. Penelitian ini dilakukan dengan metode presipitasi dengan variasi pH dan suhu sintering. Cangkang bekicot di kalsinasi pada suhu 900 oC lalu di campurkan dengan larutan asam fosfat sesuai dengan rasio molar Ca/P 1,67. Pengendapan kalsium fosfat dilakukan saat proses presipitasi dengan penambahan NaOH untuk mengatur pH pada rentang 11 dan 12. Selanjutnya dilakukan proses sintering pada suhu 600, 700, 800, dan 900 oC. Karakterisasi kalsium fosfat yang dihasilkan menggunakan XRF, XRD, dan SEM. Hasil penelitian menunjukkan perolehan hidroksiapatit (Hap) mencapai 100% pada pH 12, dan suhu 600 oC dengan struktur kristal amorf.
Pengaruh Ketebalan Membran Terhadap Sifat-Sifat Membran (Contact Angle, Porositas dan Selektivitas) Winandri, Kautsar Rahman; Anjuda, Adli Putra; Santi, Sintha Soraya
Jurnal Serambi Engineering Vol. 10 No. 1 (2025): Januari 2025
Publisher : Faculty of Engineering, Universitas Serambi Mekkah

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Polymeric membranes are commonly used materials for gas separation. Blending polymers with inorganic fillers is the most efficient way to improve membrane performance. Fillers used to date include zeolite, silica, metal organic framework (MOF) and carbon molecular sieve (CMS). However, in practice, the fillers used in membrane production are considered to be expensive. Biochar is a carbon-rich solid material produced by the combustion of organic materials or biomass with little or no oxygen (pyrolysis). Biochar is also readily available and its cost is relatively affordable. Biochar has similarities to CMS in that both contain carbon, with the commercial biochar used in this study being 70% carbon. The thickness of a membrane can affect the selectivity value of the membrane due to differences in filtration thickness. The membranes made with biochar fillers and different membrane thicknesses were then tested to determine their properties. Based on the tests conducted, it was found that the membranes produced had a higher density as the membrane thickness increased. In addition, the membranes produced were also hydrophilic. The highest selectivity value was achieved by the membrane with a thickness of 500 µm.
Synthesis of Sodium Hydroxide from Traditional Salt through Electrolysis Process Ariesta Artamevia, Nazwa; Khonsa Rezkania, Gita; Redjeki, Sri; Triana, Nurul Widji; Santi, Sintha Soraya
AJARCDE (Asian Journal of Applied Research for Community Development and Empowerment) Vol. 9 No. 2 (2025)
Publisher : Asia Pacific Network for Sustainable Agriculture, Food and Energy (SAFE-Network)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29165/ajarcde.v9i2.746

Abstract

Indonesia is expected to compete with other countries in the industrial sector, which plays a crucial role in the economic growth of a nation for its development. In several industries in Indonesia, NaOH plays a critical role in the production process, serving both as a primary component and as a supporting component. In the chemical industry, the chlor-alkali process is a crucial electrolytic technique utilized. The products generated from this process include Cl2, H2, and NaOH. This research utilizes traditional salt as a raw material for the production of NaOH, considering that traditional salt has a high NaCl content and also contains H2O, which is expected to yield NaOH with optimal concentration. This study aims to produce technical-grade NaOH that complies with the Indonesian National Standard (SNI) by examining the effects of electrical voltage and electrolysis time on the NaOH produced through the electrolysis process. The stages of this research include the preparation of a salt solution, the electrolysis process, and product analysis. The study was conducted with an NaCl concentration of 86.72% at electrical voltages of 5, 7.5, 10, 12.5, and 15 volts during the electrolysis process. Additionally, the electrolysis durations used were 100, 150, 200, 250, and 300 minutes. The weight of NaOH produced at an electrical voltage of 12.5 volts and a time of 100 minutes was 1.081 grams of NaOH. Contribution to Sustainable Development Goals (SDGs):SDG 9: Industry, Innovation, and Infrastructure SDG 12: Responsible Consumption and ProductionSDG 8: Decent Work and Economic Growth)SDG 13: Climate Action
Co-Authors Anjuda, Adli Putra Ariesta Artamevia, Nazwa Azzahra, Tsania Putri Chamida, Rida Damayanti, Savira Farizqy Erwan Adi Saputro Febriansyah, Harris Hariyanto, Ayu Puspita Kandhi Hartono, Muhamad Dendy Irawati , Febriana Kesuma, Destha A. Khonsa Rezkania, Gita Pangestu, Titan Obby Pasang, Timotius Prastica, Nita Purwanto Purwanto Putranto, Thomas T. Rahmani, Tara Puri Ducha Rosida Rosida, Rosida - Salfana, Dian Rizka Sri Redjeki SRIE MULJANI Trianna, Nurul Widji Winandri, Kautsar Rahman