scholarly journals Determination of Substantial Chemical Compounds of Agarwood Oil for Quality Grading

2020 ◽  
Vol 17 (DEC 2020) ◽  
pp. 50-59
Author(s):  
Mohamad Hushnie Haron ◽  
Mohd Nasir Taib ◽  
Nurlaila Ismail ◽  
Nor Azah Mohd Nor ◽  
Saiful Nizam Tajuddin
Keyword(s):  
Chemical Compounds ◽  
Quality Grading ◽  
Agarwood Oil

Changes of some sewage sludge parameters prepared with an ultrasonic field

1997 ◽  
Vol 36 (11) ◽  
pp. 101-106 ◽  
Author(s):  
January Bien ◽  
Lidia Wolny
Keyword(s):  
Sewage Sludge ◽  
Microscopic Analysis ◽  
Chemical Compounds ◽  
Ultrasonic Field ◽  
Water Removal ◽  
Vacuum Filter ◽  
Additional Criterion ◽  
New Methods ◽  
Sludge Conditioning

Studies of sewage sludge conditioning by ultrasonic field concentrate on determination of the increase of water removal effect, which depends on kind of sludge and chemical compounds used in the dewatering process. An attempt was made to find new methods of sludge preparation before dewatering. Tests presented here focused on digested and difficult dewatered sludge. The sludge was dewatered on a vacuum filter after conditioning with polyelectrolytes and the ultrasonic field. The microscopic analysis was an additional criterion to evaluate changes in the sludge structure after preparation. The polyelectrolyte dose of 3 mg/g d.m. sonicated within 15 sec. resulted in the 50% decrease of sludge volume. Results presented confirmed our previous experiences, concerning the relation between conglomerates of sludge and the effect of dewatering.

Determination of Agarwood oil’s significant chemical compounds using principal component analysis

2020 ◽  
Author(s):  
Mohamad Hushnie Haron ◽  
Mohd Nasir Taib ◽  
Nurlaila Ismail ◽  
Nor Azah Mohd Ali ◽  
Saiful Nizam Tajuddin
Keyword(s):  
Principal Component Analysis ◽  
Principal Component ◽  
Chemical Compounds ◽  
Component Analysis ◽  
Significant Chemical

Determination of Bioactive Components of 60°С Volatiles from Cinnamomum camphora Branches by TD-GC/MS

2011 ◽  
Vol 230-232 ◽  
pp. 852-856
Author(s):  
Qing Li ◽  
Dang Quan Zhang ◽  
Qi Mei Liu ◽  
Kuan Peng
Keyword(s):  
Chemical Compounds ◽  
Chemical Components ◽  
Cinnamomum Camphora ◽  
Bioactive Components ◽  
Industrial Materials ◽  
Analytical Result ◽  
Main Components

The chemical components of helium volatiles from the fresh branches of Cinnamomum camphora were studied by TD-GC/MS. The analytical result by 60°С-based TD-GC/MS showed that 55 peaks were obtained from the helium volatiles from the fresh branches of Cinnamomum camphora and 53 chemical compounds were identified. The results showed that the main components were as: Bicyclo[2.2.1]heptan-2-one, 1,7,7-trimethyl-, (1R)- (15.4328%), 1,3-Benzodioxole, 5-(2-propenyl)- (14.881%), Tricyclo[2.2.1.0(2,6)]heptane, 1,7-dimethyl-7-(4-methyl-3-pentenyl)-, (-)- (12.694%), p-menth-1-en-8-ol (9.832%), Bicyclo[2.2.1]heptane, 2-methyl-3-methylene-2-(4-methyl-3- pentenyl)-, (1S-exo)- (6.143%), 1,6,10-Dodecatrien-3-ol, 3,7,11-trimethyl- (5.365%), Bicyclo[3.1.1] hept-2-ene, 2,6-dimethyl-6-(4-methyl-3-pentenyl)- (4.527%), Naphthalene, 1,2,3,5,6,8a- hexahydro-4,7-dimethyl-1-(1-methylethyl)-, (1S-cis)- (4.129%), 3-Cyclohexen-1-ol, 4-methyl-1- (1-methylethyl)- (2.965%), Borneol (2.627%), Bicyclo[2.2.1]heptan-2-ol, 1,7,7-trimethyl-, acetate, (1S-endo)- (2.586%), Copaene (2.534%), 1,6,10-Dodecatriene, 7,11-dimethyl-3-methylene-, (Z)- (1.612%), (-)-Isosativene (1.121%), etc. The analytical result suggested that the helium volatiles from the fresh branches of Cinnamomum camphora could be used as industrial materials of biomedicines and spicery.

Agarwood Oil Quality Grading using OVO Multiclass Support Vector Machine

2021 ◽  
Author(s):  
A. F. M. Amidon ◽  
N. Z. Mahabob ◽  
M. H. Haron ◽  
N. Ismail ◽  
Z. M. Yusoff ◽  
...  
Keyword(s):  
Support Vector Machine ◽  
Oil Quality ◽  
Support Vector ◽  
Quality Grading ◽  
Multiclass Support Vector Machine ◽  
Agarwood Oil

Validasi dari Spektrofotometri UV-Vis dan Kandungan Total Flavonoid Ekstrak Etanol dari Akar Alang-Alang (Imperata cylindrica) dan Daun Pegagan (Centella asiatica) Anita Puspa Widiyana

2021 ◽  
Vol 3 (2) ◽  
pp. 126-136
Author(s):  
Anita Puspa Widiyana ◽  
Keyword(s):  
Chemical Constituents ◽  
Centella Asiatica ◽  
Ethanol Extract ◽  
Chemical Compounds ◽  
Imperata Cylindrica ◽  
Total Flavonoid ◽  
Analysis Method ◽  
Flavonoid Content ◽  
Validation Testing

Validation as a quality control for the content of chemical compounds from natural ingredients. One of the chemical constituents is the flavonoids which are found in the Imperatacylindrica roots and Centella asiatica leaves. This study aims to ensure the analysis method meets the requirements and determines the levels of flavonoids. The research stages included extraction, validation and determination of total flavonoid. Extraction was carried out by immersing dry simplicia in 96% ethanol solvent for 3x24 hours. The solvent is evaporated using a rotary evaporator until a thick extract is formed. Validation testing includes linearity, accuracy, precision, LOD and LOQ. Determinationof the total flavonoid was carried out by measuring the absorption at a maximum wavelength of 428.2 nm. The validation results includethe correlation coefficient (R) of 0.998, precision % RSD <2 %, %accuracy 99,53-97,98%, LOD 3.02ppm and LOQ 9.15 ppm. The total flavonoid of the ethanol extract of Imperata cylindrica roots was 36.39 ± 0.08 mg/g QE and Centella asiatica leaves was 102.10 ± 0.08 mg/g QE. The conclusion is that the method used met the validation requirements and the total flavonoid content of the ethanol extract of Centella asiatica leaves was higher than Imperata cylindrica roots

scholarly journals Determination of borneol and other chemical compounds of essential oil of Dryobalanops aromatica exudate from Malaysia

2016 ◽  
Vol 15 (6) ◽  
pp. 1293 ◽  
Author(s):  
Tian-Xin Le ◽  
Anthony Siong-Hock Ho ◽  
Siau-Hui Mah ◽  
Tin-Wui Wong ◽  
Hean- Chooi Ong ◽  
...  
Keyword(s):  
Essential Oil ◽  
Chemical Compounds

scholarly journals ANALISIS KANDUNGAN PEMANIS BUATAN SIKLAMAT PADA SIRUP YANG BEREDAR DIPASAR BESAR MALANG SECARA KUANTITATIF MENGGUNAKAN METODE SPEKTROFOTOMETRI UV-VIS

2021 ◽  
Vol 3 (3) ◽  
pp. 199-210
Author(s):  
Lukky Jayadi ◽  
Maritha Hernaningsih
Keyword(s):  
Quantitative Analysis ◽  
Food Processing ◽  
Chemical Compounds ◽  
Uv Spectrophotometry ◽  
Three Samples ◽  
Sodium Cyclamate

Sweeteners are chemical compounds that are often added and used for industrial food processing products as well as beverages and foods, sweeteners consist of natural sweeteners and synthetic sweeteners, one of the synthetic sweeteners is sodium cyclamate. This study aims to identify and determine the level of sodium cyclamate in syrup by UV spectrophotometry method and to determine the level of sodium cyclamate in syrup is still safe for consumption. The type of research is experimental and descriptive. The research sample used is syrup which is sold in the big market of Malang City. The method used for the determination of sodium cyclamate levels was done by UV spectrophotometry whose absorption was measured at a maximum wavelength of 314 nm. The results of the quantitative analysis showed that there were positive samples containing sodium cyclamate, namely sample 1, sample 2 and sample 3. The assay results in sample 1 were 238.78 mg/kg, sample 2 was 239.65 mg/kg and sample 3 was 241.39 mg/kg. Of the three samples tested for levels of cyclamate in syrup sold in the big market in Malang City, they still meet the requirements set by the head of the Food and Drug Supervisory Agency.

Water Quality Planning in Denmark

1984 ◽  
Vol 16 (5-7) ◽  
pp. 493-497
Author(s):  
Ole Have Jørgensen
Keyword(s):  
Water Quality ◽  
Environmental Protection ◽  
Coastal Waters ◽  
Chemical Compounds ◽  
Planning System ◽  
National Agency ◽  
Quality Planning ◽  
And Control ◽  
Water Quality Objectives

In 1983 the National Agency for Environmental Protection in Denmark published guiding regulations for water quality planning, based upon the rules in the Environmental Protection Act of 1974 with recent changes in 1982. The planning system contains three steps - determination of water quality objectives, calculation of discharge consents and control activities. A list of suggested quality objectives for rivers, lakes and coastal waters is included as well as a strategy for handling discharges of chemical compounds not originally found in the water.

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