Effect of supplemental ultraviolet radiation on the concentration of phytonutrients in green and red leaf lettuce ( Lactuca sativa ) cultivars

2005 ◽  
Author(s):  
Steven Britz ◽  
Charles Caldwell ◽  
Roman Mirecki ◽  
James Slusser ◽  
Wei Gao
Keyword(s):  
Ultraviolet Radiation ◽  
Lactuca Sativa ◽  
Leaf Lettuce

Effect of Water Jet Cutting and Moderate Heat Treatment on Quality of Fresh-Cut Red Oak Leaf Lettuce (Lactuca sativa L. var. crispa)

2014 ◽  
Vol 7 (12) ◽  
pp. 3478-3492 ◽  
Author(s):  
Sabine Wulfkuehler ◽  
Sabrina Stark ◽  
Johann Dietz ◽  
Herbert Schmidt ◽  
Agnes Weiss ◽  
...  
Keyword(s):  
Heat Treatment ◽  
Lactuca Sativa ◽  
Red Oak ◽  
Effect Of Water ◽  
Lactuca Sativa L ◽  
Water Jet Cutting ◽  
Fresh Cut ◽  
Leaf Lettuce ◽  
Oak Leaf Lettuce

scholarly journals Nutrients content and yield in selected cultivars of leaf lettuce (Lactuca sativa L. var. crispa)

2008 ◽  
Vol 35 (No. 3) ◽  
pp. 99-106 ◽  
Author(s):  
M. Koudela ◽  
K. Petříková
Keyword(s):  
Vitamin C ◽  
Significant Influence ◽  
Lactuca Sativa ◽  
Dry Matter ◽  
Growing Season ◽  
Lactuca Sativa L ◽  
Leaf Lettuce

Five cultivars of leaf lettuce (Lactuca sativa L. var. crispa) – Bergamo, Dubáček, Frisby, Lollo Rossa and Redin – were evaluated in two-year experiments carried out at the Faculty of Horticulture in Lednice (Mendel University of Agriculture and Forestry in Brno). Experiments were conducted in two trial years, 1998 and 1999; the lettuce was cultivated in three seasons: spring, summer and autumn. After the harvest, contents of following nutrients were evaluated: vitamin C, minerals (K, Na, Ca, Mg), fibre, dry matter and nitrates. The weight of leaf rosette was also recorded. The contents of selected substances and weights of leaf rosette were ranged as follows: vitamin C (65 to 302 mg/kg), potassium (2,394 to 6,477 mg/kg), sodium (39 to 223 mg/kg), calcium (200 to 755 mg/kg), magnesium (110 to 413 mg/kg), fibre (4.98 to 12.22 g/kg), dry matter (59 to 140 g/kg), nitrates (293 to 3,817 mg/kg) and the weight of leaf rosette (164 to 502 g). A significant influence of cultivar was found in the case of K, Na, and Ca content, as well as in dry matter and weight of leaf rosette. The growing season affected significantly all the evaluated substances, except for fibre. The year of cultivation affected all the evaluated parameters but Ca. It appears from the results that the contents of monitored substances were significantly influenced by cultivar as well as by growing season and year.

scholarly journals DEGRADAÇÃO DO CORANTE AZUL REATIVO 5G PELO PROCESSO OXIDATIVO AVANÇADO UV/H2O2

e-xacta ◽  
2016 ◽  
Vol 9 (2) ◽  
Author(s):  
Denis Rafael de Souza Lima ◽  
Isabela Luiza Alves de Almeida ◽  
Vanderlei Inácio de Paula
Keyword(s):  
Hydrogen Peroxide ◽  
Ultraviolet Radiation ◽  
Chemical Oxygen Demand ◽  
Lactuca Sativa ◽  
Azo Dye ◽  
Advanced Oxidation Process ◽  
Oxidation Process ◽  
Oxygen Demand ◽  
Liquid Wastes ◽  
Optimized Conditions

<p>Neste trabalho avaliou-se a aplicação do processo oxidativo avançado (POA) de foto-peroxidação (UV/H<sub>2</sub>O<sub>2</sub>) na degradação do azocorante têxtil comercial Azul Reativo 5G. Foram preparadas soluções sintéticas contendo o corante e tratadas através do respectivo POA, sendo a eficiência do tratamento avaliada através dos seguintes parâmetros: descoloração, redução da demanda química de oxigênio (DQO) e ecotoxicidade com sementes de Lactuca sativa. Após 30 minutos de tratamento em condições otimizadas na presença de peróxido de hidrogênio e radiação ultravioleta, foi observada descoloração na ordem de 91,8% sem redução significativa da DQO (1,8%), além de diminuição da ecotoxicidade da solução, indicando a viabilidade da aplicação do processo UV/H<sub>2</sub>O<sub>2</sub> para tratamento de resíduos líquidos contendo este azocorante.</p><p>ABSTRACT</p><p>In the present paper was evaluated the application of advanced oxidation process (AOP) photo-peroxidation (UV/H<sub>2</sub>O<sub>2</sub>) applied to degradation of the commercial textile azo dye Reactive Blue 5G. Synthetic solutions were prepared containing the dye, treated through the respective AOP and the efficiency of the treatment evaluated by the following parameters: discoloration, reduction of chemical oxygen demand (COD) and ecotoxicity with Lactuca sativa seeds. After 30 minutes of treatment in optimized conditions in the presence of hydrogen peroxide and ultraviolet radiation, discoloration was observed in order of 91.8% without significant reduction of COD (1.8%), but decrease in the ecotoxicity of the solution, indicating feasibility of the process UV/H<sub>2</sub>O<sub>2</sub> for treating liquid wastes containing this azo dye.</p>

scholarly journals Transformation of Leaf Lettuce (Lactuca sativa L.) by Infection of Seeds with Agrobacterium tumefaciens

2004 ◽  
Vol 16 (4) ◽  
pp. 215-219
Author(s):  
Motomu AKITA ◽  
Hisashi KAJIWARA ◽  
Yoshimoto OHTA
Keyword(s):  
Agrobacterium Tumefaciens ◽  
Lactuca Sativa ◽  
Leaf Lettuce

Genetic variation and phylogenetic relationship among different leaf lettuce (Lactuca sativa L.) varieties in Korea

2020 ◽  
Vol 53 (3) ◽  
Author(s):  
Yu-Meng Lu ◽  
Xin-Fu Bai ◽  
Shi-Lin Zheng ◽  
Yong-Chul Park ◽  
Yan-Lin Sun ◽  
...  
Keyword(s):  
Genetic Variation ◽  
Phylogenetic Relationship ◽  
Lactuca Sativa ◽  
Lactuca Sativa L ◽  
Leaf Lettuce
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