A Pretreatment Method for Analysis of Available Tetracycline in Soils

2021 ◽  
pp. 1-17
Author(s):  
Yongning Shi ◽  
Yixiang Wang ◽  
Haiyan Cao ◽  
Xinxin Shan ◽  
Yuhong Su
Keyword(s):  
Pretreatment Method

373. Simple Pretreatment Method for the Analysis of Insoluble Hexavalent Chromium

1999 ◽  
Author(s):  
J. Roh ◽  
E. Lee ◽  
J. Won ◽  
M. Chun ◽  
M. Cho ◽  
...  
Keyword(s):  
Hexavalent Chromium ◽  
Pretreatment Method

Effect of Ethanol Treatment on Lycopene Extraction yield

2018 ◽  
Author(s):  
Nam Kyong-il ◽  
KIM rak-chon ◽  
Kang chang-hyok ◽  
Lee song-nam ◽  
Ryom sok-hun
Keyword(s):  
Antioxidant Activity ◽  
Treatment Time ◽  
Extraction Yield ◽  
Extraction Rate ◽  
Test Results ◽  
Ethanol Treatment ◽  
Optimum Conditions ◽  
Liquid Ratio ◽  
Pretreatment Method ◽  
Ethanol Pretreatment

In order to extract lycopene more effectively, this experiment focused on the optimization of ethanol pretreatment method to study the effects of ethanol treatment on the extraction rate of lycopene and its antioxidant activity. The test results show that 2 times ethanol treatment is very effective for improving lycopene yield. The optimum conditions of ethanol treatment are temperature 50 ℃, treatment time 1 time 2h, 2 times 2h, solid to liquid ratio is 1:12. The lycopene yield can be reached 20mg / 100g above.

scholarly journals Role of laccase as an enzymatic pretreatment method to improve lignocellulosic saccharification

2014 ◽  
Vol 4 (8) ◽  
pp. 2251-2259 ◽  
Author(s):  
Lucy Heap ◽  
Anthony Green ◽  
David Brown ◽  
Bart van Dongen ◽  
Nicholas Turner
Keyword(s):  
Wheat Straw ◽  
Trametes Versicolor ◽  
Enzymatic Pretreatment ◽  
Pretreatment Method ◽  
Alkaline Peroxide

The saccharification of wheat straw was improved when an incubation step was performed withTrametes versicolorlaccase (TvL) and the mediator 1-hydroxybenzotriazole (1-HBT) prior to an alkaline peroxide extraction (APE).

scholarly journals A New Radiocarbon Pretreatment Method for Molluscan Shell Using Density Fractionation of Carbonates in Bromoform

Radiocarbon ◽  
2010 ◽  
Vol 52 (3) ◽  
pp. 1301-1311 ◽  
Author(s):  
Christopher M Russo ◽  
Jennifer A Tripp ◽  
Katerina Douka ◽  
Thomas F G Higham
Keyword(s):  
Radiocarbon Dating ◽  
Separation Technique ◽  
Archaeological Sites ◽  
Density Fractionation ◽  
Pretreatment Method ◽  
Density Separation ◽  
Molluscan Shell ◽  
Archaeological Artifacts ◽  
Organic Remains

Coastal archaeological sites that lack organic remains for radiocarbon dating are often abundant sources of molluscan shells. As a substitute for materials such as bone and charcoal, shells can be analyzed with 14C dating to determine a site's age. Despite their being convenient, non-mobile archaeological artifacts, molluscan shells are plagued by several issues, including carbonate remodeling, in which aragonite in shells is converted to calcite as predicted by thermodynamics. We present here a carbonate density separation technique that addresses the issue of carbonate remodeling. Using a density fractionation with bromoform, aragonite concentrations are enriched in shells that have undergone significant remodeling. The technique has been applied to archaeological shells and has returned dates that are younger than those previously determined for the same shells.

Household food waste dehydration technique as a pretreatment method for food waste minimisation

2016 ◽  
Vol 17 (3/4) ◽  
pp. 273 ◽  
Author(s):  
Aggelos Sotiropoulos ◽  
Nikoletta Bava ◽  
Katerina Valta ◽  
Stergios Vakalis ◽  
Vasiliki Panaretou ◽  
...  
Keyword(s):  
Food Waste ◽  
Pretreatment Method ◽  
Household Food ◽  
Waste Minimisation
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