Hemicellulose structural changes during steam pretreatment and biogradation of Lentinus edodes

The digital microfluidic system based on electrowetting on dielectric is a new technology that can control microliter droplets within the plane. Because of layout, fabrication, and driving uncertainties, feedback control schemes must be designed and implemented to ensure safety and reliability of digital microfluidic system for practical application. The basis for feedback is to realize the accurate droplet location. So, there is a strong need for the development of a digital microfluidic system integrated with position and feedback scheme for innovative biological research. In this paper, we propose a position and feedback scheme based on light intensity for digital microfluidic system. The verified experiment results show that the proposed position and feedback scheme can position multiple droplets accurately and improve the success rate of droplets transport application by feedback.

Section: Droplet Velocity Measurementmentioning

confidence: 99%

Position and feedback for digital microfluidic system based on light intensity information

Luo

Fan

Huang

et al. 2020

“…The GS program starts at 40 C and lasts for 2 min, passes 5 C/min to 120 C, then increases to 200 C at 10 C/min for 15 min, EI is 250 C, 28-500 amu scanning range. [26][27][28][29][30][31][32][33][34] 3 | RESULTS AND DISCUSSION…”

Section: Experiments Methodsmentioning

confidence: 99%

Chemical components analysis of Toona sinensis bark and wood by pyrolisis–gas chromatography–mass spectrometry

Yang

et al. 2020

Self Cite

The production of energy from wood biomass is as old as humanity itself. There has been enormous progress in research of sustainable pyrolysis processes for optimal energy conversion in the past 30 years. Pyrolisis–gas chromatography–mass spectrometry (PY‐GC‐MS) was used to examine the components of bark and wood of Toona sinensis for expanding high value utilization different parts of trees. In the study, 174 chemical constituents were identified in the bark; 169 chemical constituents were identified in the wood, respectively. The chemical composition of bark is different from that of wood. The change in thermal cracking 30 min ago is not very large. In the retention time is more than 30 min, they are very different. Because the ash content of bark had much large corresponding wood. Mainly the phenols and their derivatives formed after the pyrolysis of lignin and extractives. The chemical composition of T. sinensis provides a scientific basis for the development and utilization of the plant. The richer chemical constituents of T. sinensis are found, which will provide new scientific evidence for further development and utilization of bark and wood of T. sinensis.

“…GC/MS adopts Agilent 5975C/7890A type gas chromatography–mass spectrometry instrument produced by Agilent company of the United States 36 . Gas chromatography conditions are as follows: the chromatographic column is the HP‐5 MS (30 m × 0.25 mm × 0.25 UM) elastic quartz capillary column of Agilent company 37,38 without retention and then was heated at a rate of 8°C/min up to 250°C/min. The carrying gas is helium 39 .…”

Section: Methodsmentioning

confidence: 99%

Constituent diversity of ethanol extracts from pitaya

Zhang

et al. 2020

Pitaya is rich in nutrition and unique in function and contains vegetable albumin, anthocyanins, rich vitamins, and water soluble dietary fiber, which are rare in fruits and vegetables. However, researches mostly focused on pitaya cultivation, biological characteristics, fresh‐keeping, and lacked analyses about chemical composition of pitaya. Therefore, ethanol extraction and GC/MS were used to extract and identify the bioactive components in pulp and pericarp of red pitaya and white pitaya. The extracting results showed that percentages of ethanol extracts from pulp and pericarp of red pitaya were 14.5% and 12%, whereas those of white pitaya were 16% and 12%. The GC/MS results showed that different kinds of bioactive constituents were identified in fresh pericarp and pulp of red pitaya and white pitaya. In the four ethanol extracts, there are rich polysiloxane plant organosilicon with total contents of 10.09%, 24.21%, 25.77%, and 23.25%. Meanwhile, there are many heterocyclic substances, and the content of pericarp is much higher than that of pulp. The four ethanol extracts also contain some other bioactive ingredients, such as esters, hydrocarbons, alcohols, amides, halides, and fatty acids, which can be used as raw materials for biomedicine, advanced cosmetics, and skin care products.