Evaluation of Clausena pentaphylla (Roxb.) DC oil as a fungitoxicant against storage mycoflora of pigeon pea seeds

2012 ◽  
Vol 93 (7) ◽  
pp. 1680-1686 ◽  
Author(s):  
Abhay K Pandey ◽  
Uma T Palni ◽  
Nijendra N Tripathi
Keyword(s):  
2017 ◽  
Vol 08 (05) ◽  
pp. 16844-16846
Author(s):  
Nagla, A Hassan ◽  
◽  
Murwan, K Sabahelkhier ◽  
Kho gali Elnur A.I ◽  
◽  
...  
Keyword(s):  

1983 ◽  
Vol 101 (2) ◽  
pp. 435-440 ◽  
Author(s):  
T. O. Tayo

SUMMARYThe seeds of a dwarf variety of pigeon pea (cv. Cita-1) were sown at 2, 4, 6 or 8 cm depths in three field trials in 1981 and 1982, in order to evaluate the effect of sowing depth on seedling emergence and the subsequent growth, development and yield of the crop.In all trials, sowing pigeon-pea seeds deeper than 4 cm led to 1–2 days delay in seedling emergence, resulted in only 40–68% seedling emergence, reduced the development of the various growth and yield characters of the plant and significantly reduced seed yield. In two trials, plants from 4 cm sowing performed better than those from 2cm sowing in terms of development of growth and yield characters indicating that shallow sowing of pigeon pea prevents rapid and proper plant establishment.The results therefore indicate that the optimum sowing depth for pigeon pea is 4 cm under the prevailing lowland humid tropical conditions.


2004 ◽  
Vol 86 (1) ◽  
pp. 17-23 ◽  
Author(s):  
Edilene C. Ferreira ◽  
Ana Rita A. Nogueira ◽  
Gilberto B. Souza ◽  
Luiz A. R. Batista

2018 ◽  
Vol 45 (No. 1) ◽  
pp. 19-25 ◽  
Author(s):  
B. Swella G ◽  
K. Mushobozy D M

The comparative susceptibility of seeds of ten legumes to infestation by <I>Callosobruchus maculatus</I> was studied in choice and no-choice experiments. Cowpea, garden pea and pigeon pea seeds recorded the significantly highest number of eggs oviposited and percentage adult emergence, the shortest developmental period, highest susceptibility indices and the highest weight loss. In a choice experiment, treatments which had a cowpea mixture recorded the maximum number of eggs deposited on that legume. The order for ovipositional preference for all legume seeds remained almost the same irrespective of the host on which <I>C. maculatus</I> had been reared. Also, there was no association between the seeds preferred for oviposition and culture on which the bruchid was reared. Cowpea and pigeon pea seeds were found to be highly susceptible to <I>C. maculatus</I>, whereas common bean, black gram and chickpea seeds were the least susceptible.


2014 ◽  
Vol 3 (2) ◽  
pp. 63-66
Author(s):  
Abhay K. Pandey ◽  
Pooja Singh ◽  
Uma T. Palni ◽  
Nijendra N. Tripathi

The objective of the present study is to investigate the effect of physical factors on mycotoxic potency of Chenopodium ambrosioides Linn. and Clausena pentaphylla (Roxb.) DC oils against four species of Aspergilli such as A. flavus Link, A. niger van Tieghem, A. ochraceus Wilhelm, A. terreus Thom causing post-harvest deterioration of pigeon pea seeds. During experimentation it was observed that the potency of both oils remained unchanged even against heavy inoculum dose (maximum number of 10 fungal discs and diameter of 25 mm). Furthermore, the toxicity of both the oils did not alter even up to 120 ºC of temperature and 12 months of storage by exhibiting 100% mycelial inhibition of test fungi.  The toxicity of both the oils was decreased at alkaline pH (7, 8).  Physicochemical characterization of oils revealed that C. ambrosioides oil was pale yellow in colour, lighter than water, laevorotatory, acidic in nature and showed positive test for phenols. While the oil of C. pentaphyllahad light pale color, dextrorotatory, slightly acidic and showed presence of phenols.  Both the oils showed good solubility in various organic solvents 


Molecules ◽  
2021 ◽  
Vol 26 (24) ◽  
pp. 7557
Author(s):  
Duangjai Tungmunnithum ◽  
Samantha Drouet ◽  
Jose Manuel Lorenzo ◽  
Christophe Hano

Pigeon pea is an important pea species in the Fabaceae family that has long been used for food, cosmetic, and other phytopharmaceutical applications. Its seed is reported as a rich source of antioxidants and anti-inflammatory flavonoids, especially isoflavones, i.e., cajanin, cajanol, daidzein, and genistein. In today’s era of green chemistry and green cosmetic development, the development and optimization of extraction techniques is increasing employed by the industrial sectors to provide environmentally friendly products for their customers. Surprisingly, there is no research report on improving the extraction of these isoflavonoids from pigeon pea seeds. In this present study, ultrasound-assisted extraction (USAE) methodology, which is a green extraction that provides a shorter extraction time and consumes less solvent, was optimized and compared with the conventional methods. The multivariate strategy, the Behnken–Box design (BBD) combined with response surface methodology, was employed to determine the best extraction conditions for this USAE utilizing ethanol as green solvent. Not only in vitro but also cellular antioxidant activities were evaluated using different assays and approaches. The results indicated that USAE provided a substantial gain of ca 70% in the (iso)flavonoids extracted and the biological antioxidant activities were preserved, compared to the conventional method. The best extraction conditions were 39.19 min with a frequency of 29.96 kHz and 63.81% (v/v) aqueous ethanol. Both the antioxidant and anti-aging potentials of the extract were obtained under optimal USAE at a cellular level using yeast as a model, resulting in lower levels of malondialdehyde. These results demonstrated that the extract can act as an effective activator of the cell longevity protein (SIR2/SIRT1) and cell membrane protector against oxidative stress. This finding supports the potential of pigeon pea seeds and USAE methodology to gain potential antioxidant and anti-aging (iso)flavonoids-rich sources for the cosmetic and phytopharmaceutical sectors.


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