Effect of postharvest handling on valerenic acids content of fresh valerian (Valeriana officinalis) root

2005 ◽  
Vol 86 (1) ◽  
pp. 107-110 ◽  
Author(s):  
Deborah Shohet ◽  
Ron BH Wills
Keyword(s):  
Valeriana Officinalis ◽  
Postharvest Handling ◽  
Valerenic Acids

scholarly journals Micellar LC Separation of Sesquiterpenic Acids and Their Determination in Valeriana officinalis L. Root and Extracts

2012 ◽  
Vol 2012 ◽  
pp. 1-8
Author(s):  
Artem U. Kulikov
Keyword(s):  
Mobile Phase ◽  
Limit Of Detection ◽  
Micellar Liquid Chromatography ◽  
Valeriana Officinalis ◽  
Solution Ph ◽  
Hydroalcoholic Extract ◽  
Brij 35 ◽  
Ich Guidelines ◽  
Valerenic Acids

A simple micellar liquid chromatography (MLC) method was developed and validated according to ICH Guidelines for the determination of sesquiterpenic acids (valerenic, hydroxyvalerenic, and acetoxyvalerenic acids) in root and rhizome extract from Valeriana officinalis L. and valerian dry hydroalcoholic extract. Samples were analyzed on Nucleosil C18 column (, 5 μm) using an isocratic mobile phase which consisted of Brij 35 (5% (w/v) aqueous solution; pH  by phosphoric acid) and 1-butanol (6% (v/v)); UV detection was at 220 nm. Micellar mobile phase using allows to fully separate valerenic acids within 25 minutes. Linearity for hydroxyvalerenic, acetoxyvalerenic, and valerenic acids was 1.9–27.9, 4.2–63.0, and 6.1–91·3 μg.mL−1, and limit of detection was 0.14, 0.037, and 0.09 μg·mL−1, respectively. Intraday and interday precisions were not less than 2% for all investigated compounds. The proposed method was found to be reproducible and convenient for quantitative analysis of sesquiterpenic acids in valerian root and related preparations.

Investigation of Valeriana officinalis L. from Iran

Planta Medica ◽  
2009 ◽  
Vol 75 (09) ◽  
Author(s):  
F Nazari ◽  
S Shaabani ◽  
S Nejad Ebrahimi
Keyword(s):  
Valeriana Officinalis

Structure of the shortening stem of Valeriana officinalis L. and distribution and development of parenchyma cells

2010 ◽  
Vol 36 (4) ◽  
pp. 392-394
Author(s):  
Zha-ru ZHANG ◽  
Zhao-an WEI ◽  
Xiao-ying PENG ◽  
Bin TAN ◽  
Shuang-de ZHOU
Keyword(s):  
Valeriana Officinalis ◽  
Parenchyma Cells

Making Sense of Cooling Data

HortScience ◽  
1998 ◽  
Vol 33 (3) ◽  
pp. 545a-545
Author(s):  
M.D. Boyette
Keyword(s):  
Fruits And Vegetables ◽  
Cooling Rates ◽  
Amount Of Information ◽  
Making Sense ◽  
Postharvest Handling ◽  
Proper Analysis

Prompt cooling to remove field heat is an essential part of proper postharvest handling for many types of fresh fruits and vegetables. Growers, consultants, and horticultural agents are often encouraged to collect cooling data (time vs. temperature) in order to compare cooling rates for different systems, containers, etc. These data can be misleading and confusing and seldom yield much useful information. With proper analysis, cooling data can yield a large amount of information. The problem is not the fault of the data, as much as the lack of simple methods to analyze these data. This presentation will demonstrate several simple methods to extract useful information from cooling data.

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