scholarly journals Evaluation of lemon grass (Cymbopogon flexuosus) as an anticoccidal agent in broilers production in Calabar, Nigeria

2009 ◽  
Vol 7 (2) ◽  
Author(s):  
PU Owai ◽  
IM Michael
Keyword(s):  
Lemon Grass ◽  
Cymbopogon Flexuosus

Optimization of soda pulping process of ligno-cellulosic residues of lemon and sofia grasses produced after steam distillation

BioResources ◽  
2010 ◽  
Vol 6 (1) ◽  
pp. 103-120
Author(s):  
Harjeet Kaur ◽  
Dharm Dutt ◽  
C. H. Tyagi
Keyword(s):  
Steam Distillation ◽  
Strength Properties ◽  
Kappa Number ◽  
Pulp Yield ◽  
Lemon Grass ◽  
Cymbopogon Flexuosus ◽  
Cooking Temperature ◽  
Soda Pulping ◽  
Lignocellulosic Residue ◽  
Better Than

Sofia (Cymbopogon martini), and lemon (Cymbopogon flexuosus) grasses, are exclusively cultivated for extraction of important lemongrass and palma rosa oils. Lignocellulosic residue (LCR) of sofia and lemon grasses left after steam distillation can successfully be used for the production of chemical grade pulp. Steam distillation mitigates the problem of mass transfer, and facilitates the faster penetration of cooking liquor by leaching out a part of extraneous components. Sofia grass produces a pulp yield of 43.7% of kappa number 20 at an active alkali dose of 14% (as Na2O), maximum cooking temperature of 160 oC and cooking time 90 min. Likewise, lemon grass produces a pulp yield of 41.4% of kappa number 12.5 under the same conditions except temperature (150 oC) by a soda pulping process. Addition of 0.1% AQ at optimum cooking conditions reduces kappa number by 26 and 8% for sofia and lemon grasses with insignificant increase in pulp yield i.e. 0.2 and 0.4% for sofia and lemon grasses, respectively. The mechanical strength properties of lemon grass soda-AQ pulp are better than sofia grass. Bauer-McNett fiber classification further validates that +20 fractions are more (62.63%) in lemon grass than in sofia grass (42.72%).

scholarly journals Physical localization of 45S rDNA in Cymbopogon and the analysis of differential distribution of rDNA in homologous chromosomes of Cymbopogon winterianus

PLoS ONE ◽  
2021 ◽  
Vol 16 (11) ◽  
pp. e0257115
Author(s):  
Shivangi Thakur ◽  
Upendra Kumar ◽  
Rashmi Malik ◽  
Darshana Bisht ◽  
Priyanka Balyan ◽  
...  
Keyword(s):  
Chromosome Pair ◽  
Interspecific Variation ◽  
Rdna Site ◽  
45S Rdna ◽  
Differential Distribution ◽  
Homologous Chromosomes ◽  
Lemon Grass ◽  
Cymbopogon Flexuosus ◽  
Cymbopogon Winterianus ◽  
Aromatic Grasses

Cymbopogon, commonly known as lemon grass, is one of the most important aromatic grasses having therapeutic and medicinal values. FISH signals on somatic chromosome spreads off Cymbopogon species indicated the localization of 45S rDNA on the terminal region of short arms of a chromosome pair. A considerable interspecific variation in the intensity of 45S rDNA hybridization signals was observed in the cultivars of Cymbopogon winterianus and Cymbopogon flexuosus. Furthermore, in all the varieties of C. winterianus namely Bio-13, Manjari and Medini, a differential distribution of 45S rDNA was observed in a heterologous pair of chromosomes 1. The development of C. winterianus var. Manjari through gamma radiation may be responsible for breakage of fragile rDNA site from one of the chromosomes of this heterologous chromosome pair. While, in other two varieties of C. winterianus (Bio-13 and Medini), this variability may be because of evolutionary speciation due to natural cross among two species of Cymbopogon which was fixed through clonal propagation. However, in both the situations these changes were fixed by vegetative method of propagation which is general mode of reproduction in the case of C. winterianus.

scholarly journals Altitudinal variation in the volatile constituents of Cymbopogon flexuosus from Uttarakhand region of Himalaya

2019 ◽  
Vol 11 (2) ◽  
pp. 263-266 ◽  
Author(s):  
Anju Bhatnagar
Keyword(s):  
Biological Application ◽  
High Concentration ◽  
Altitudinal Variation ◽  
Isomeric Mixture ◽  
Lemon Grass ◽  
Ms Analysis ◽  
Cymbopogon Flexuosus ◽  
The Family ◽  
Plant Constituents ◽  
Total Oil

The essential oils of Cymbopogon flexuosus (lemon grass) of the family Poaceae collected from different altitudes of the Uttarakhand region of Himalaya were subjected to detailed GC/MS analysis in order to determine the variation of concentration in their constituents. The GC/MS analysis led to the identification of 29 constituents forming 90.62 to 93.58% of their total oil content. The major constituents were citral, geraniol, citronellol,citranellal, linalool, borneol, ?-myrcene limonene, ?-caryophyllene, camphene, ?-cadinene, ? terpineol, neryl acetate and heptenone. Plants collected from 450 m altitude afforded citral (74.58 %) [a isomeric mixture of geranial and nearl] as a major constituents whereas only a less percentage of citral (64.21%, 68.29%) was found in the plants collected from two other altitudes i.e 250m and 1000m respectively. The geraniol, cam-phene and neryl acetate were obtained in a high concentration form the plants collected at 250 m altitude but in the plant from two other altitudes, it was found only in less proportion. Similarly, ?-cadinene, ?-terpineol and camphene were the major constituents of plants at 1000m altitude but in other plants it was detected in very low concentration. Since, the concentration of plant constituents affected by altitude and season, medicinalproperties of such plants and their use in biological application would vary accordingly.

scholarly journals Effect and Accumulation of Lanthanum on the Growth and Physiological Activities of Cymbopogon Flexuosus (Nees Ex Steud.)W.Watson

2015 ◽  
Vol 10 (3) ◽  
pp. 951-956 ◽  
Author(s):  
Aradhana Basu ◽  
Swati Panda ◽  
Nabin Dhal
Keyword(s):  
Rare Earth ◽  
Rare Earth Elements ◽  
Chemical Elements ◽  
Preliminary Investigation ◽  
Dry Mass ◽  
Growth Conditions ◽  
Cultivated Plants ◽  
Lemon Grass ◽  
Cymbopogon Flexuosus ◽  
Long Time

The rare earth elements are a set of seventeen chemical elements which involve the lanthanide series from Lanthanum (La), Tolutetium (Lu), Scandium (Sc), and Yttrium (Y) in the periodic table. Even if Rare Earth Elements are used widely in industry and agriculture in China as well as India for a long time, there has been increasing interest in the application of REEs to plants in recent years. In this paper, we discussed the effect of REE on growth and physiological activities of the plant. By compilation and investigation of these data, we found that REEs have promoting impact at certain concentration. An increase in Chlorophyll, enzymes and protein content further indicated the stimulating effect of La on physiological activities of the selected plants. Depending on the results of this preliminary investigation we can say that a new REE hyperaccumulator, Cymbopogon flexuosus (Lemon grass), was discovered which could accumulate Lanthanum is 20.725 mg g-1 and 25.625 mg g-1 dry mass in root and shoot part respectively under natural growth conditions. Advanced research should be invested regarding the impacts of REEs on yields of cultivated plants.

Management of rice weevil, Sitophilus oryzae using essential volatile oils

ENTOMON ◽  
2018 ◽  
Vol 43 (4) ◽  
pp. 277-280
Author(s):  
S. R. Binseena ◽  
N. Anitha ◽  
Ambily Paul ◽  
V. S. Amritha ◽  
K. N. Anith
Keyword(s):  
Sitophilus Oryzae ◽  
Rice Weevil ◽  
Piper Nigrum ◽  
Syzygium Aromaticum ◽  
Volatile Oils ◽  
Cinnamon Oil ◽  
Percentage Mortality ◽  
Lemon Grass ◽  
Cymbopogon Flexuosus ◽  
Cent Mortality

Effect of four essential volatile oils viz., clove (Syzygium aromaticum L.), cinnamon (Cinnamomum zeylanicum Blume), lemon grass (Cymbopogon flexuosus (Nees ex steud)) and pepper (Piper nigrum L.) on mortality of rice weevil, Sitophilus oryzae L. in stored rice was studied under laboratory conditions. Preliminary toxicity bioassays (without food and with food) were carried for fixing the concentrations of these oils. Percentage mortality of weevils by volatile essential oils increased with increase in concentration and period of exposure. Pepper oil @ 200 μl/500 cm-3 volume caused cent per cent mortality without any progeny emergence whereas cinnamon oil @ 30 μl 500 cm-3 caused 95.55 per cent mortality of weevils with 98.81 inhibitions on progeny emergence. The highest concentration (30 μl 500 cm-3) of clove oil caused 76.67 percentage mortality of weevils while lemon grass oil (200 μl 500 cm-3) caused 68.89 percentage mortality.

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