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PENGARUH KONSENTRASI BASA TERHADAP PRODUK HIDROLISIS ESTER Saragih, Sri Wahyuna
BIOLINK (Jurnal Biologi Lingkungan, Industri, Kesehatan) Vol 1, No 2 (2015): Februari
Publisher : Program Studi Biologi, Fakultas Biologi Universitas Medan Area

This study aims to determine the effect of concentration of base to ester hydrolysis products. Ester can dihidroisis with an alkaline catalyst at different concentrations. In this study, the concentration of metal acetate used was 1 M NaOH while coud concentration was 0.5 M, 0.75 M, 1 M, 1.25 M. The hydrolysis reaction using ethanol and refluxed for 2 hours at room temperature. Hydrolysis of methyl acetate ester compounds produced methanol with purity varies by different concentrations of methyl acetate and NaOH. At concentrations of 0.5 M NaOH acquired 79.5068% purity methanol, 0.75 M NaOH concentration 85.6665% purity methanol, 1 M NaOH concentration 99.6311% purity methanol and NaOH concentration of 1.25 M purity methanol 100,0000 %. Based on the results of the hydrolysis product purity shows the influence of the concentration of NaOH to the product ester hydrolysis. Methanol compound structure was analyzed by an infrared spectrometer and a mass spectrometer.

PENGARUH KONSENTRASI BASA TERHADAP PRODUK HIDROLISIS ESTER Sri Wahyuna Saragih
BIOLINK (Jurnal Biologi Lingkungan Industri Kesehatan) Vol 1, No 2 (2015): Februari
Publisher : Universitas Medan Area

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31289/biolink.v1i2.728

This study aims to determine the effect of concentration of base to ester hydrolysis products. Ester can dihidroisis with an alkaline catalyst at different concentrations. In this study, the concentration of metal acetate used was 1 M NaOH while coud concentration was 0.5 M, 0.75 M, 1 M, 1.25 M. The hydrolysis reaction using ethanol and refluxed for 2 hours at room temperature. Hydrolysis of methyl acetate ester compounds produced methanol with purity varies by different concentrations of methyl acetate and NaOH. At concentrations of 0.5 M NaOH acquired 79.5068% purity methanol, 0.75 M NaOH concentration 85.6665% purity methanol, 1 M NaOH concentration 99.6311% purity methanol and NaOH concentration of 1.25 M purity methanol 100,0000 %. Based on the results of the hydrolysis product purity shows the influence of the concentration of NaOH to the product ester hydrolysis. Methanol compound structure was analyzed by an infrared spectrometer and a mass spectrometer.

Thermal and physical properties of CNF/glutaraldehyde-gelatin-based hydrogel ROSLIANA LUBIS; SRI WAHYUNA SARAGIH; WARDATUL HUSNA IRHAM; AJMAIN AJMAIN; SAISA SAISA
Jurnal Natural Volume 23 Number 1, February 2023
Publisher : Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24815/jn.v23i1.29935

The use of hydrogel as a wound dressing material is currently being massively developed. In addition to functioning to protect wounds, the use of hydrogel can also provide moisture in a measured manner and can be used as a drug delivery medium. In this study, hydrogel based on CNF and glutaraldehyde crosslinking agent and addition of gelatin were developed with various compositions 0.25; 0.5; 0.75 g to increase the ability of CNF and hydrogel to absorb water so that it is good to be applied as a wound dressing. The composting of the three materials aims to obtain a hydrogel with good thermal and physical properties. Based on physical character for a good ratio of swelling (666,62%) and degree of cross-linking (94%) on the hydrogel with a composition variation of 0.5 g of CNF addition. For the thermal stability of hydrogel var 2, TMax 591oC provides better thermal stability than var 1 and var 3. The morphology of hydrogel shows very small and evenly distributed pores on the surface which can absorb more water.

Thermal and physical properties of CNF/glutaraldehyde-gelatin-based hydrogel ROSLIANA LUBIS; SRI WAHYUNA SARAGIH; WARDATUL HUSNA IRHAM; AJMAIN AJMAIN; SAISA SAISA
Jurnal Natural Volume 23 Number 1, February 2023
Publisher : Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24815/jn.v23i1.29935

The use of hydrogel as a wound dressing material is currently being massively developed. In addition to functioning to protect wounds, the use of hydrogel can also provide moisture in a measured manner and can be used as a drug delivery medium. In this study, hydrogel based on CNF and glutaraldehyde crosslinking agent and addition of gelatin were developed with various compositions 0.25; 0.5; 0.75 g to increase the ability of CNF and hydrogel to absorb water so that it is good to be applied as a wound dressing. The composting of the three materials aims to obtain a hydrogel with good thermal and physical properties. Based on physical character for a good ratio of swelling (666,62%) and degree of cross-linking (94%) on the hydrogel with a composition variation of 0.5 g of CNF addition. For the thermal stability of hydrogel var 2, TMax 591oC provides better thermal stability than var 1 and var 3. The morphology of hydrogel shows very small and evenly distributed pores on the surface which can absorb more water.

STRATEGI PENANGANAN BERCAK DAUN CURVULARIA SP. PADA PEMBIBITAN KELAPA SAWIT DI INDONESIA Irham, Wardatul Husna; Saragih, Sri Wahyuna; Febrianto, Eka Bobby; Yazid, Abu; Haholongan, Rahmat; Maulana, Andre; Damanik, Riski
Agro Estate Vol 7 No 2 (2023): Desember 2023
Publisher : Institut Teknologi Sawit Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47199/jae.v7i2.201

Oil palm (Elaeis guineensis Jacq) is one of the plantation crops that produces vegetable oil which has become the main ingredient and leading agricultural commodity in Indonesia. The quality of oil palm seedlings is a disease attack during the seedling stage. The most common disease found in oil palm nurseries is leaf spot disease. The aim of this research is to propose strategies for handling leaf spot in oil palm nurseries in Indonesia. This research is a literature study research. The data used comes from secondary data. Data collection methods use textbooks, journals and periodical. Data analysis is carried out by reading, collecting, citing information, concluding and interpreting the results obtained through relevant study materials. The results obtained that there are several strategies that can be used to treat leaf spot in oil palm nurseries in Indonesia, i.e. by carrying out photon energy irradiation which can increase plant resistance to various types of pathogens, developing organic fertilizer formulations and using biocontrol agent which is expected to help oil palm nurseries in suppressing leaf spot disease, using fungicides to prevent resistance, taking preventive measures to reduce the risk of spot disease on oil palm leaves, carrying out conservation fertilization using S2 (385 mesh), S3 (638 mesh), and S4 (644 mesh) sachets and applying liquid smoke areca nut in suppressing the growth of Curvularia sp.

PEMBUATAN BIOETANOL DARI BATANG KELAPA SAWIT (Elais Guineensis Jacq.) MELALUI PROSES PRETREATMENT MENGGUNAKAN H2SO4 DAN FERMENTASI MENGGUNAKAN RAGI ROTI (Saccharomyces cerevisiae) Giyanto; Saragih, Sri Wahyuna; Rahimah
Jurnal Agro Fabrica Vol. 5 No. 2 (2023): Desember 2023
Publisher : Institut Teknologi Sawit Indonesia (ITSI)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47199/jaf.v5i2.203

Unproductive oil palm stems can produce Umbut which is the raw material for bioethanol production. In general, the production process of bioethanol from lignocellulosic materials includes oil palm stalks. The bioethanol production process goes through several stages of physical, chemical or biological pretreatment, polymer saccharification, sugar fermentation, and ethanol separation and purification. This study aims to determine the production of bioethanol from oil palm stems (Elaeis Guineensis Jacq) through a pretreatment process using H2S04 and fermentation using baker's yeast (Saccharomyces cerevisiae). The method used in this study was a Completely Randomized Design (CRD) Non Factorial with 3 treatment levels and 1 control, and 3 repetitions (Triplo) with a total sample of 12 samples. The resulting bioethanol is then tested (moisture content, yield, and pH). The resulting data were analyzed using ANOVA and Duncan's test. Based on the results of this study, the best treatment was found in the H0 treatment with a yield of 34.5%, 1.52% moisture content and 5,6 % pH

Kajian : Pestisida Glifosat (N-phosphonomethyl-glycine) Pada Perkebunan Kelapa Sawit dan Lingkungan Menggunakan Alat Pendekatan PRISMA Anggraeni, Trisna; Samosir, Rony Harlen; Siahaan, Tria Putra; Pasaribu, Felix Yudha; Sandro, Ales; Haura, Khanaya Balqis; Simarmata, Armando Sahat Parulian; Saragih, Sri Wahyuna; M, Maisarah
Madani: Jurnal Ilmiah Multidisiplin Vol 1, No 9 (2023): Oktober
Publisher : Penerbit Yayasan Daarul Huda Kruengmane

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5281/zenodo.13855383

The use of pesticides containing the active ingredient Glyphosate (N-phosphonomethyl-glycine) in oil palm plantations has raised concerns about serious environmental impacts. This article aims to analyze the environmental impacts caused by the use of Glyphosate (N-phosphonomethyl-glycine) in oil palm plantations. This article presents a study of the use of the herbicide Glyphosate (N-phosphonomethyl-glycine) with the Preferred Reporting Items for Systematic Reviews and Meta-analysis Item (PRISMA) Approach used to identify, filter, and include relevant articles. Identifying articles related to the use of the active ingredient Glyphosate (N-phosphonomethyl-glycine) in the oil palm plantation sector that meet the requirements for analysis is one of the writing methods. The findings indicate that there are high levels of residues in the use of Glyphosate (N-phosphonomethyl-glycine) in the soil and water around the plantation. The findings show the accumulation of residues of Glyphosate (N-phosphonomethyl-glycine) which is often known by the trade name Roundup which exceeds the safe threshold, has the potential to harm soil and water quality, and affect the growth of oil palm plants themselves. The findings also show that Roundup has an impact on biodiversity around the plantation with a significant decrease in the diversity of flora and fauna. This indicates a negative impact on the local ecosystem. So this article highlights the urgency to implement sustainable pesticide management practices in the oil palm industry. Strengthened environmental protection measures are needed, including monitoring the use of Roundup and developing more environmentally friendly alternatives.

PEMBUATAN BIOETANOL DARI BATANG KELAPA SAWIT (Elais Guineensis Jacq.) MELALUI PROSES PRETREATMENT MENGGUNAKAN H2SO4 DAN FERMENTASI MENGGUNAKAN RAGI ROTI (Saccharomyces cerevisiae) Giyanto; Saragih, Sri Wahyuna; Rahimah
Jurnal Agro Fabrica Vol. 5 No. 2 (2023): Desember 2023
Publisher : Institut Teknologi Sawit Indonesia (ITSI)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47199/jaf.v5i2.203

Unproductive oil palm stems can produce Umbut which is the raw material for bioethanol production. In general, the production process of bioethanol from lignocellulosic materials includes oil palm stalks. The bioethanol production process goes through several stages of physical, chemical or biological pretreatment, polymer saccharification, sugar fermentation, and ethanol separation and purification. This study aims to determine the production of bioethanol from oil palm stems (Elaeis Guineensis Jacq) through a pretreatment process using H2S04 and fermentation using baker's yeast (Saccharomyces cerevisiae). The method used in this study was a Completely Randomized Design (CRD) Non Factorial with 3 treatment levels and 1 control, and 3 repetitions (Triplo) with a total sample of 12 samples. The resulting bioethanol is then tested (moisture content, yield, and pH). The resulting data were analyzed using ANOVA and Duncan's test. Based on the results of this study, the best treatment was found in the H0 treatment with a yield of 34.5%, 1.52% moisture content and 5,6 % pH

STRATEGI PENANGANAN BERCAK DAUN CURVULARIA SP. PADA PEMBIBITAN KELAPA SAWIT DI INDONESIA Irham, Wardatul Husna; Saragih, Sri Wahyuna; Febrianto, Eka Bobby; Yazid, Abu; Haholongan, Rahmat; Maulana, Andre; Damanik, Riski
Agro Estate Vol 7 No 2 (2023): Desember 2023
Publisher : Institut Teknologi Sawit Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47199/jae.v7i2.201

Oil palm (Elaeis guineensis Jacq) is one of the plantation crops that produces vegetable oil which has become the main ingredient and leading agricultural commodity in Indonesia. The quality of oil palm seedlings is a disease attack during the seedling stage. The most common disease found in oil palm nurseries is leaf spot disease. The aim of this research is to propose strategies for handling leaf spot in oil palm nurseries in Indonesia. This research is a literature study research. The data used comes from secondary data. Data collection methods use textbooks, journals and periodical. Data analysis is carried out by reading, collecting, citing information, concluding and interpreting the results obtained through relevant study materials. The results obtained that there are several strategies that can be used to treat leaf spot in oil palm nurseries in Indonesia, i.e. by carrying out photon energy irradiation which can increase plant resistance to various types of pathogens, developing organic fertilizer formulations and using biocontrol agent which is expected to help oil palm nurseries in suppressing leaf spot disease, using fungicides to prevent resistance, taking preventive measures to reduce the risk of spot disease on oil palm leaves, carrying out conservation fertilization using S2 (385 mesh), S3 (638 mesh), and S4 (644 mesh) sachets and applying liquid smoke areca nut in suppressing the growth of Curvularia sp.

REVIEW: ANALYSIS OF FERTILIZER USE ON PALM HARVEST RESULTS Irham, Wardatul Husna; Friska Anggraini Barus; Marzuti Isra; Sri Wahyuna Saragih; Andrew Ivanovic Purba
Agro Estate Vol 8 No 2 (2024): Desember 2024
Publisher : Institut Teknologi Sawit Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47199/jae.v8i2.276

Literature research has been carried out on the use of fertilizer on oil palm plants with several types of fertilizer. The aim of this research is to see the effect of several types of fertilizer on palm oil yields. The method used in this research is a literature review. Research results show that the fertilizers often used are chicken manure, goat manure, compost and cow urine. Providing animal manure fertilizer at doses of 0, 50, and 100 g/polybag had the same effect on the development of the upper seedlings, while a dose of 50 g/polybag had the best effect on the development of the lower seedlings. Fertilizer greatly influences the level of soil fertility, thereby increasing the number of leaves, the health of palm stems and palm harvest yields.

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