scholarly journals Experimental determination of poplar (Populus nigra L.) wood drying curves 

2017 ◽  
Vol 63 (Special Issue) ◽  
pp. S53-S58
Author(s):  
Souček Jiří ◽  
Kroulík Milan
Keyword(s):  
Plant Material ◽  
Relative Rate ◽  
Populus Nigra ◽  
Wood Drying ◽  
Important Indicator ◽  
Fresh Plant Material ◽  
Drying Curves ◽  
Drying Conditions ◽  
Drying Efficiency

Fresh plant material is degraded quickly and very easily. A possibility to avoid its degradation is drying. Drying is an energy-intensive operation and reducing of energy consumption means improving the energy balance and the economy of production. An important indicator of drying efficiency is the relative rate of drying. Curves of the relative drying rate for poplar (Populus nigra L.) wood were determined in an experimental oven. Freshly harvested samples were compared to samples of poplars that were stored between March and December on an outdoor uncovered area. The rate of stored wood drying was higher in comparison with fresh wood under comparable drying conditions. 

The determination of oxalates in fresh plant material

The Analyst ◽  
1952 ◽  
Vol 77 (916) ◽  
pp. 340 ◽  
Author(s):  
C. J. L. Baker
Keyword(s):  
Plant Material ◽  
Fresh Plant ◽  
Fresh Plant Material

An Improved Analytical Procedure for the Determination of Xanthophyll

1967 ◽  
Vol 50 (3) ◽  
pp. 707-711
Author(s):  
G O Kohler ◽  
R E Knowles ◽  
A L Livingston
Keyword(s):  
Plant Material ◽  
Analytical Procedure ◽  
Fresh Plant ◽  
Fresh Plant Material ◽  
Cold Saponification

Abstract A modified procedure is described for the determination of carotene and xanthophyll in fresh and dehydrated alfalfa and grass meal. In this method, both carotene and total xanthophyll can be measured from a single extract. The carotenoids in dehydrated alfalfa or grass meal are extracted by overnight soaking in hexane-acetone (7:3) ; those in the fresh plant material are rapidly extracted by blending with acetone. A cold saponification method eliminates possible chlorophyll contamination of the xanthophyll fraction during chromatography. Data on the precision of the modified methods are presented

Contribution to the Optimization of a Gas Chromatographic Method by QbD Approach used for Analysis of Essential Oils from Salvia officinalis

2019 ◽  
Vol 70 (6) ◽  
pp. 2015-2020
Author(s):  
Silvia Robu ◽  
Aurelia Romila ◽  
Olimpia Dumitriu Buzia ◽  
Adrian Florin Spac ◽  
Camelia Diaconu ◽  
...  
Keyword(s):  
Essential Oil ◽  
Essential Oils ◽  
Plant Material ◽  
Mobile Phase ◽  
Chromatographic Method ◽  
Salvia Officinalis ◽  
Salvia Officinalis L ◽  
Gas Chromatographic Method

Numerous articles on Salvia officinalis L. have been published regarding the composition of their essential oil. The considerable variation found may be due to the quality of the plant material as well as to the methods used for analysis. A simple GC-MS method was developed and optimized in the QbD approach, for the determination of sage essential oils. The optimization of GC-MS analysis was performed using different mobile phase flows, injection volumes, split ratios and temperature programs. The optimized method proved to be simple and can be successfully applied for the determination of sage essential oils.

scholarly journals THE COLORIMETRIC DETERMINATION OF FRUCTOSAN IN PLANT MATERIAL

1945 ◽  
Vol 157 (1) ◽  
pp. 161-167
Author(s):  
Willard L. McRary ◽  
Marion C. Slattery
Keyword(s):  
Plant Material ◽  
Colorimetric Determination

scholarly journals Cherry Tomato Drying: Sun versus Convective Oven

Horticulturae ◽  
2021 ◽  
Vol 7 (3) ◽  
pp. 40
Author(s):  
Vincenzo Alfeo ◽  
Diego Planeta ◽  
Salvatore Velotto ◽  
Rosa Palmeri ◽  
Aldo Todaro
Keyword(s):  
Moisture Content ◽  
Initial Moisture Content ◽  
Drying Process ◽  
Drying Time ◽  
Oven Drying ◽  
Sun Drying ◽  
Different Temperatures ◽  
Final Water Content ◽  
Drying Curves ◽  
Drying Conditions

Solar drying and convective oven drying of cherry tomatoes (Solanum lycopersicum) were compared. The changes in the chemical parameters of tomatoes and principal drying parameters were recorded during the drying process. Drying curves were fitted to several mathematical models, and the effects of air temperature during drying were evaluated by multiple regression analyses, comparing to previously reported models. Models for drying conditions indicated a final water content of 30% (semidry products) and 15% (dry products) was achieved, comparing sun-drying and convective oven drying at three different temperatures. After 26–28 h of sun drying, the tomato tissue had reached a moisture content of 15%. However, less drying time, about 10–11 h, was needed when starting with an initial moisture content of 92%. The tomato tissue had high ORAC and polyphenol content values after convective oven drying at 60 °C. The dried tomato samples had a satisfactory taste, color and antioxidant values.

Analytical procedures for the determination of emerging organic contaminants in plant material: A review

2012 ◽  
Vol 722 ◽  
pp. 8-20 ◽  
Author(s):  
Víctor Matamoros ◽  
Diana Calderón-Preciado ◽  
Carmen Domínguez ◽  
Josep M. Bayona
Keyword(s):  
Organic Contaminants ◽  
Plant Material ◽  
Emerging Organic Contaminants ◽  
Analytical Procedures

The determination of copper in plant material

The Analyst ◽  
1953 ◽  
Vol 78 (931) ◽  
pp. 614 ◽  
Author(s):  
W. A. Forster
Keyword(s):  
Plant Material ◽  
Determination Of Copper
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