scholarly journals PENGARUH SUHU DAN WAKTU TERHADAP PROSES PENYULINGAN MINYAK SEREH WANGI (Cimbopogon nardus l.)

2021 ◽  
Vol 1 (1) ◽  
pp. 22
Author(s):  
Junita Adianda Sari ◽  
Wusnah Wusnah ◽  
Azhari Azhari
Keyword(s):  
Essential Oils ◽  
Distillation Process ◽  
Research Procedure ◽  
The Difference ◽  
Distillation Yield

ABSTRAK Ekstraksi adalah suatu proses pemisahan suatu zat berdasarkan perbedaan kelarutannya terhadap dua cairan tidak saling larut yang berbeda. Pengambilan ekstrak minyak atsiri dapat dilakukan dengan tiga metode yaitu penyulingan atau destilasi, ekstraksi menggunakan pelarut, dan melalui pengepresan atau penekanan.Pada percobaan ini metode yang digunakan untuk mengekstrak minyak dari daun sereh wangi dilakukan dengan cara penyulingan. Adapun tujuan dari percobaan ini yaitu untuk mengetahui pengaruh waktu dan suhu penyulingan pada proses pengambilan minyak atsiri. Adapun prosedur penelitian dimulai dengan ukuran daun sereh diperkecil terlebih dahulu. Kemudian ditimbang sereh sebanyak 500 gram. Dimasukkan air sebanyak 500 mL sebagai pelarut, setelah itu baru ditambahkan daun sereh wangi kedalam alat penyulingan. Proses penyulingan dilakukan pada suhu 120 ℃ dengan variasi waktu penyulingan (3, 3,5, 4, 4,5 dan 5) jam. Hasil penyulingan kemudian dilakukan pemisahan, untuk memisahkan air yang masih terkandung didalam minyak. Ulangi prosedur diatas dengan suhu yang berbeda. Hasil dari penelitian yang didapat yaitu % yield yang terendah didapat pada waktu 3 jam dengan suhu 120 ℃ yaitu 0,998% dan % yield tertinggi didapat pada waktu 5 jam dan pada suhu 120 ℃ yaitu 1,228%. Sedangkan nilai densitas yang terendah diperoleh pada waktu penyulingan 5 jam yaitu 0,882 gr/ml dan nilai densitas tertinggi diperoleh pada waktu 3 jam yaitu 0,886 gr/ml. Kata Kunci: Ekstraksi, Penyulingan, Yield, Densitas, Daun Sereh Wangi ABSTRACT Extraction is a process of separating a substance based on the difference in solubility of two different insoluble liquids. Extracting essential oils can be done in three methods, namely distillation or distillation, extraction using solvents, and pressing or pressing. In this experiment the method used to extract oil from leaves of fragrant lemongrass is done by distillation. The purpose of this experiment is to determine the effect of distillation time and temperature on the process of extracting essential oils. The research procedure starts with the size of lemongrass leaves being reduced first. Then weighing 500 grams of lemongrass. Add 500 mL of water as a solvent, then add lemongrass leaves to the distiller. The distillation process was carried out at a temperature of 120 ℃ with variations in distillation time 3 hours, 3.5 hours, 4 hours, 4.5 hours and 5 hours. The distillation is then separated, to separate the water that is still contained in the oil. Repeat the procedure above with a different temperature. The results of the research obtained were the lowest% yield obtained at 3 hours with a temperature of 120 ℃ which was 0.998% and the highest% yield was obtained at 5 hours and at a temperature of 120 ℃ ie 1.282%. While the lowest density value obtained at the time of 5 hours distillation is 0.882 gr / ml and the highest density value obtained at 3 hours is 0.886 gr / ml. Keywords: Extraction, Distillation, Yield, Density, Fragrant Citronella Leaves

Manufacturing Process for Extracting Essential Oils from White Pepper (Piper nigrum L.) by Hydrodistillation Technique

2019 ◽  
Vol 298 ◽  
pp. 89-93 ◽  
Author(s):  
Thien Hien Tran ◽  
Thi To Quyen Ngo ◽  
Thi Kim Ngan Tran ◽  
Tri Duc Lam ◽  
Tan Phat Dao ◽  
...  
Keyword(s):  
Essential Oil ◽  
Essential Oils ◽  
Manufacturing Process ◽  
Oil Extraction ◽  
Piper Nigrum ◽  
Optimal Conditions ◽  
Distillation Process ◽  
White Pepper ◽  
Oil Performance

Vietnam is the world's leading country in growing and producing pepper trees. In this study, we attempted the optimization of white pepper essential oil extraction. The obtained oil was then subject to determination of constituent composition via GC-MS method. The essential oil performance achieved 3.6% by hydro-distillation process with optimal conditions (25 grams of fresh pepper, size 18, 120 minutes extraction, 130°C). A total of 23 volatile constituents were identified from the white pepper essential oil, with the major components being 27.4% of Limonene, 3-Carene 22,928%, Sabinene 17,622%, β-pinene 10.068%, α-Pinene 5.426%.

EVALUATION OF THE DISSOLVING EFFICACY OF ESSENTIAL OILS ON ENDODONTIC OBTURATING MATERIALS: AN IN VITRO STUDY.

2021 ◽  
pp. 66-68
Author(s):  
Rakesh Pyla ◽  
Jai Kiran Killada ◽  
V Raja Sekhar
Keyword(s):  
Essential Oils ◽  
Epoxy Resin ◽  
In Vitro Study ◽  
Vitro Study ◽  
Lavender Oil ◽  
Citronella Oil ◽  
Gutta Percha ◽  
Lemon Oil ◽  
The Difference

Aim:Endodontic retreatment is a procedure that removes the lling materials from the root canals followed by their cleaning, shaping and obturation. This in-vitro study aimed to compare and evaluate the ability of various essential oils as solvents in dissolving gutta-percha, epoxy resin, and zinc oxide eugenol (ZOE) cements. Materials and methods: A total of 28 cylindrical specimens in each group ZOE, epoxy resin, 28 ISO size 40 gutta-percha cones were prepared and divided into four groups for immersion in the different solvents, i.e. lemon oil, citronella oil, lavender oil, and TCE(Tetrachloroethylene (control)) for 5 minutes. The obturating materials dissolution in the solvents were obtained by the difference between the pre-immersion original weight and the post-immersion weight on a digital analytical scale. Data were statistically analysed by a paired t-test and Analysis of Variance (ANOVA) (p < 0.05). Results: Order of efcacy of dissolution of essential oils was found to be lemon oil > Citronella oil > Lavender oil and was highly signicant (p < 0.01). In all the solvents, Gutta-percha showed maximum dissolution (Fvalue:149.56) followed by ZOE(89.07 ) and resin sealer least (23.86). Conclusion: It can be concluded that the lemon oil can be used as a solvent for dissolving obturating materials.

scholarly journals Essential Oil Hydrodistillation Process from Vietnamese Calamondin (Citrus microcarpa) Peels and GC/MS Analysis of Essential Oils Components

2019 ◽  
Vol 31 (11) ◽  
pp. 2585-2588 ◽  
Author(s):  
Ngo Thi Cam Quyen ◽  
Tran Thi Kim Ngan ◽  
Tan Phat Dao ◽  
Phan Nguyen Quynh Anh ◽  
Ngo Quoc Anh ◽  
...  
Keyword(s):  
Mass Spectrometry ◽  
Essential Oil ◽  
Essential Oils ◽  
Gas Chromatography Mass Spectrometry ◽  
Optimal Conditions ◽  
Distillation Process ◽  
Factors Affecting ◽  
Oil Extract ◽  
Primary Compound ◽  
Water Ratio

The essential oil of Citrus microcarpa peels was applied in many fields, and the methods to improve the efficiency of citrus exploitation were increasingly concerned. In this study, citrus essential oil was extracted from calamondin by hydrodistillation. This study was carried out to investigate the factors affecting the distillation of essential oils. The highest performance of the distillation process was 2.45 % with optimal conditions (material-water ratio of 1:3 g/mL, time of 2 h, the temperature of 120 ºC). Moreover, calamondin (Citrus microcarpa) peels oil extract was analyzed by gas chromatography-mass spectrometry (GC-MS). The primary compound of calamondin essential oil include limonene 96.925 %, β-myrcene 1.424 %, 1R-α-pinene 0.561 %, cyclohexene 0.343 %, 1R-α-pinene 0.561 % and β-cubebene 0.598 %.

Fast Pyrolysis of Distillated Ashe Juniper Biomass

2006 ◽  
Author(s):  
Jaime J. Jua´rez ◽  
Victor R. Contreras ◽  
Gaston R. Haupert ◽  
Steven Hill ◽  
Daren E. Daugaard
Keyword(s):  
Essential Oils ◽  
Large Scale ◽  
Steam Distillation ◽  
Energy Content ◽  
Fast Pyrolysis ◽  
Distillation Process ◽  
Lower Heating Value ◽  
Bio Oil ◽  
Ashe Juniper ◽  
Liquid Yield

Ashe Juniper is one of three major species of juniper native to Texas. Communities of Ashe Juniper occupy over 8 million acres of Texas rangelands and are responsible for herbage reduction, which adversely impacts the livestock carrying capacity. Ashe Juniper wood contains aromatic liquids called essential oils, which are economically beneficial for the personal care products industry. In order to exploit this benefit Texarome, Inc. of Leaky, Texas uses a large-scale steam distillation process to extract aromatic liquids from Ashe Juniper. This process results in a large quantity of Ashe Juniper woodchip waste for which there is few uses. A moderate temperature process known as fast pyrolysis was used to convert steam-distillated Ashe Juniper into a liquid known as bio-oil. An average liquid yield of 40.8% is reported for steam-distillated Ashe Juniper biomass and an average liquid yield of 47.3% is reported Ashe Juniper biomass that has not undergone the steam distillation process. This work demonstrates that the energy content of steam distillated Ashe Juniper can be extracted and the conversion to bio-oil is another potential use for Ashe Juniper woodchip waste. An economic model of Ashe Juniper biomass developed previously by Jua´rez and Daugaard was used to examine the economic impact of steam-distilled Ashe Juniper by simulating a 4,046-hectare (10,000 acre) Ashe Juniper energy plantation. It was found that bio-oil could be produced for as little as $5.20/GJ on a lower heating value basis if re-investment of profits made from the sale of essential oils extracted during the steam distillation process was assumed. Bio-oil from un-distillated Ashe Juniper could be produced for $13.21/GJ.

scholarly journals Penerapan Model Learning Cycle Untuk Meningkatkan Tanggung Jawab Siswa (PTK Pada Kelas V SD Negeri 11 Kota Bengkulu)

2021 ◽  
Vol 3 (2) ◽  
pp. 222-234
Author(s):  
Wulanda Rahmadia ◽  
Alexon Alexon ◽  
Sri Dadi
Keyword(s):  
Female Students ◽  
Learning Cycle ◽  
Male Students ◽  
Average Score ◽  
Model Learning ◽  
Student Activities ◽  
Analysis Technique ◽  
Research Procedure ◽  
The Difference ◽  
Range Of Values

This research aims to increase the responsibility of students in grade V to Negeri 11 Bengkulu by applying the Learning Cycle learning model. This research is a classroom action research. The subjects of this study were 28 students consisting of 14 male students and 14 female students. The research procedure is in the form of a cycle. Each cycle consists of four stages including planning, implementing actions, observing and reflecting. The research instrument was in the form of observation sheets of teacher and student activities. The data analysis technique used is the observation sheet using the formula of the average score, the highest score, the lowest score, the difference in score and the range of values for each criterion. Thus the application of the Learning Cycle model can increase the responsibility of VB grade students in Sd Negeri 11 Bengkulu City.

scholarly journals Kinerja Internal Reboiler Tipe Vertical Tubular Baffle pada Proses Distilasi Etanol secara Batch

2021 ◽  
Vol 15 (1) ◽  
pp. 59
Author(s):  
Yuana Susmiati ◽  
Bambang Purwantana ◽  
Nursigit Bintoro ◽  
Sri Rahayoe
Keyword(s):  
Heat Transfer ◽  
Transfer Process ◽  
Distillation Column ◽  
Heat Transfer Process ◽  
Distillation Process ◽  
Different Diameters ◽  
Distillation Yield

The performance of ethanol distillation is determined by the type of reboiler used in the distillation column. This study aims to determine the effect of differences in diameter and height of internal reboiler tubes, as well as feed content on ethanol distillate concentration and distillation yield. The research was conducted on a batch ethanol distillation process using a rectified distillation device with an internal vertical tubular baffle reboiler using different diameters and tube height, namely 1.5, 1, and 0.5 inches of diameter, and 8, 6, and 4 cm of tube heights. Materials or feeds in this study were ethanol solutions with levels of 10%, 20%, and 30% v/v. The results showed that the highest ethanol distillate content of 97.17% v/v (average) was achieved in the distillation process using an internal reboiler with a diameter of 0.5”, a tube height of 8 cm, and a feed content of 10%. Geometry affected the heat transfer process in the internal reboiler of a distillation device so that it affected the distillation results.Keywords: distillation; ethanol; internal reboiler: performanceA B S T R A KKinerja alat distilasi etanol ditentukan oleh jenis reboiler yang digunakan pada kolom distilasi. Penelitian ini bertujuan untuk menentukan pengaruh perbedaan diameter dan tinggi tabung internal reboiler, serta kadar umpan terhadap kadar etanol distilat dan rendemen distilasi. Penelitian dilakukan pada proses distilasi etanol secara batch menggunakan alat distilasi rektifikasi dengan internal reboiler jenis Vertical Tubular Baffle yang berbeda ukuran diameter dan tinggi tabungnya, yaitu diameter 1,5, 1 dan 0,5 inci, serta tinggi tabung 8, 6 dan 4 cm. Bahan atau umpan pada penelitian ini adalah larutan etanol berkadar 10%, 20% dan 30% v/v. Hasil penelitian didapatkan kadar etanol distilat yang paling tinggi dengan kadar rata-rata 97,17% v/v dicapai pada proses distilasi dengan internal reboiler berukuran diameter 0,5 inci, dan tinggi tabung 8 cm dan kadar umpan 10%. Geometri berpengaruh pada proses perpindahan panas di dalam internal reboiler suatu alat distilasi sehingga berpengaruh terhadap hasil distilasi.Kata kunci: distilasi; etanol; internal reboiler; kinerja

scholarly journals Volatile Oil Composition of Some Commercial Medicinal Plants Sold in Konya, Turkey

2019 ◽  
pp. 1-5
Author(s):  
Eray Tulukcu
Keyword(s):  
Medicinal Plants ◽  
Essential Oil ◽  
Essential Oils ◽  
Oil Content ◽  
Local Community ◽  
Volatile Oil ◽  
Essential Oil Composition ◽  
Oil Composition ◽  
Thyme Essential Oil ◽  
The Difference

This study was conducted to determine the essential oil composition of some medicinal plants from herbalists that local community have interest in; The research was carried out in the Medicinal Plants Laboratory of  Konya, in 2014 – 2015. The medicinal plants used in the research were supplied by herbalists and wholesalers who supply medicinal plants in Konya. At the end of this study, essential oil composition of medicinal plants ranged from 0.71 % (Daphne) to 5% (Thyme). The lavender essential oil composition ranged between 2% and 5%, while the composition of thyme essential oil ranged between 1% and 5%. There are several reasons for the change observed in the essential oil content of medicinal plants. In general, the effect of difference in the proportion of essential oils of the medicinal plants used in the study was as a result of the difference in regions, domestically and abroad where these plants were collected.

scholarly journals Utilization of Lavandula angustifolia Miller extracts as natural repellents, pharmaceutical and industrial auxiliaries

2004 ◽  
Vol 69 (1) ◽  
pp. 1-7 ◽  
Author(s):  
Ayse Yusufoglu ◽  
Hülya Çelik ◽  
Gülay Kirbsalar
Keyword(s):  
Chemical Composition ◽  
Ir Spectra ◽  
Essential Oils ◽  
Chemical Data ◽  
Capillary Gc ◽  
Lavandula Angustifolia ◽  
Physico Chemical ◽  
The Difference

Essential oils, absolutes and concretes were prepared from the flowers and leaves of the plant Lavandula angustifolia Miller cultivated in the Bosphorus region of Istanbul, Turkey. The difference in the chemical composition of the mentioned extracts was investigated and compared by using a combination of capillary GC-MS with the aim of offering them as repellent, pharmaceutical and industrial auxiliaries. The IR-spectra, the yields and the physico-chemical data of the extracts were also analyzed.

scholarly journals Effectiveness of Interventions Co-Financed by the Eu Structural Funds in Wielkopolska in the Years 2004-2006

2010 ◽  
Vol 29 (2) ◽  
pp. 85-102 ◽  
Author(s):  
Paweł Churski ◽  
Anna Borowczak
Keyword(s):  
Three Dimensions ◽  
Public Intervention ◽  
Diagnostic Measures ◽  
Structural Funds ◽  
Evaluation Approach ◽  
Research Procedure ◽  
Regional Component ◽  
Eu Structural Funds ◽  
The Difference ◽  
The Eu

Effectiveness of Interventions Co-Financed by the Eu Structural Funds in Wielkopolska in the Years 2004-2006 The aim of this article is to analyse the effectiveness of interventions from the EU Structural Funds in Wielkopolska carried out for investments realised in the years 2004-2006, i.e. in the first period of implementing Community regional policy in Poland. The research procedure is composed of two fundamental stages. In the first, projects co-financed from the EU Structural Funds within the framework of the Regional Component of the Integrated Regional Operational Programme were systematised by the criterion of intervention direction within each of the three dimensions of cohesion: economic, social and territorial. In the second stage, selected diagnostic measures for each dimension of cohesion were subjected to effectiveness analysis. The procedure rested on a questions/methods-oriented model applied in line with the theory-driven evaluation approach, a quasiexperimental design and the difference-in-differences technique, as well as methods of econometric analysis. The results made it possible to assess public intervention in Poland in terms of its effectiveness, and to identify challenges that have to be faced very soon.

Meningkatkan Hasil Belajar Peserta Didik dengan Modul Pembelajaran Berbasis Problem Based Learning (PBL)

2020 ◽  
Vol 12 (1) ◽  
pp. 166
Author(s):  
Yesika Widayanti
Keyword(s):  
Student Learning ◽  
Learning Outcomes ◽  
Student Learning Outcomes ◽  
Thinking Skills ◽  
Critical Thinking Skills ◽  
Research Procedure ◽  
The Difference ◽  
Module Development ◽  
Research Type

The low critical thinking skills of students at SMAN 1 Driyorejo have an impact on the low learning outcomes and the quality of education at the school. To overcome this need a development of teaching materials that require students to think critically and improve learning outcomes. This study was designed to meet the needs of learning media with the aim of describing the module development process according to Thiagarajan, analyzing the feasibility of the modules developed, describing student learning outcomes, and describing differences in student learning outcomes. Research type of research and development are assessed by material experts, linguists, evaluation experts, and graphic experts. Using the 4D model from Thiagarajan. The research procedure includes 3 phases, define, design, and develop. Instruments of product validity were obtained from material experts, linguists, evaluation experts and graphic experts. The results of this study show that the development of PBL-based modules is considered "Decent" based on the average validation of experts, the existence of PBL-based modules can improve student learning outcomes and is strengthened by the difference between learning outcomes of students who use PBL modules with the learning outcomes of students who do not use PBL modules.

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