Effect of natural, accelerated and saturated salt accelerated aging on the <i>Jatropha curcas</i> L. seeds in optimizing the yield of seed oil as feedstock for biodiesel

Suresh, A.; Shah, Nikita; Kotecha, Mansi; Robin, Pushpa

doi:10.1080/15567036.2018.1522396

Cited by 11 publications

(4 citation statements)

References 19 publications

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“…Differences in RH generate differential seed survival curves in C. edulis seeds under sensitive temperatures, with higher RH (87%) promoting a faster seed aging in comparison with lower RH (73%). This result coincides with those obtained in Jatropha curcas L. seeds, which showed a faster deterioration in AA tests over water in contrast with using a saturated salt solution [44]. Similar results were obtained with Hirschfeldia incana when comparing humid (75%) and dry (33% RH) storage at 35 °C, where humid storage decreased almost 100 times seed longevity [45].…”

Section: Seed Resistance To Temperature and Relative Humiditysupporting

confidence: 88%

“…To evaluate the role of RH inside the aging container, distilled water and a saturated commercial NaCl solution (40 g/100 ml H 2 O) were used. Saturated salt solutions are often used for controlling environmental variables as they generate a defined RH environment, inferior to a water-saturated atmosphere [44]. Relative humidity and temperature inside the aging container were tested by introducing a data logger sensor (EasyLog, Lascar Electronics) and a wireless digital thermometer and hygrometer (WA10-Kira EU, Oria) after different time intervals (24, 48, 72 and 96 h inside aging containers).…”

Section: Relative Humidity and Seed Imbibition Experimentsmentioning

confidence: 99%

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A rapid and sensitive method to assess seed longevity through accelerated aging in an invasive plant species

2020

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Background: Seed longevity and vigor assessment is crucial for efficient ex situ biodiversity conservation in genebanks but may also have potential applications for the understanding of ecological processes and in situ biodiversity conservation. In fact, one of the factors determining the persistence of invasive species, a main threat to global biodiversity, is the generation of soil seed banks where seeds may remain viable for several years. Artificial seed aging tests using high temperatures and high relative humidity have been described for seed longevity estimation but have been mainly optimized for species with commercial interest. Thus, the aim of the study is to define a rapid and sensitive method to assess seed longevity and vigor through accelerated aging in the worldwide distributed invasive species Carpobrotus edulis to provide tools to biodiversity managers to evaluate invasive potential and develop effective post-eradication plans. Results: Slow seed deterioration rate was obtained when C. edulis seeds were subjected to common accelerated aging temperatures (43-45 °C). This contrasts with the rapid viability decay between 24-72 h when seeds were subjected to temperatures superior to 55 °C, a strong inflection point for this species' thermosensitivity. Relative humidity also played a role in defining seed survival curves, but only at high temperatures, speeding up the deterioration process. The selected aging conditions, 55 °C at 87% relative humidity were tested over two C. edulis populations and three measures were proposed to parametrize the differential sigmoidal seed survival curves, defining the seed resistance to deterioration (L 5 , aging time where 95% of seeds maintain their viability), medium longevity (L 50 , 50% of seeds lose their viability) and lethal aging time (L 95 , 95% of viability loss). Conclusions: An accelerated aging test at 55 °C and 87% relative humidity constitutes a rapid and sensitive method that can be performed within a working week, allowing managers to easily test seed vigor and longevity. This test may contribute to assess invasive potential, design effective monitoring programs and soil seed bank eradication treatments.

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Section: Seed Resistance To Temperature and Relative Humiditysupporting

confidence: 88%

Section: Relative Humidity and Seed Imbibition Experimentsmentioning

confidence: 99%

A rapid and sensitive method to assess seed longevity through accelerated aging in an invasive plant species

2020

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“…As the ageing increased, the oil content is further decreased i.e., 9.2% reduction was observed on 11 th day of ageing than control seeds (Table 1). The results observed are in confirmity with Suresh et al, (2019) who showed a similar significant reduction in total oil content in accelerated aged Effect of Acceleratedly Aged Groundnut (Arachis hypogaea L.) Seeds on Physiological and Biochemical Properties Jatropha seeds. Increased relative humidity and temperature during accelerated ageing resulted in increased moisture content in seeds through attaining equilibrium resulting in lipid peroxidation and autooxidation (Suriyong, 2007).…”

Section: Resultssupporting

confidence: 89%

Effect of Acceleratedly Aged Groundnut (Arachis hypogaea L.) Seeds on Physiological and Biochemical Properties

Gayathri¹,

Jerlin²,

Eevera³

et al. 2023

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Background: Accelerated ageing causes seeds to deteriorate that affect the seed quality of groundnut seeds. Seed deterioration will cause metabolic and chemical changes viz., lipid peroxidation and autoxidation, leading to loss of membrane integrity and enzyme activities. These changes are associated with reduced germination and vigour. Methods: The groundnut seeds cv. VRI 8 was subjected for accelerated ageing at 40oC with 100% RH upto 11 days and evaluated the physiological and biochemical changes in groundnut seeds associated with accelerated ageing. Results: The germination and seed vigour of accelerated aged groundnut seeds exhibited declining trend which was well correlated with antioxidant enzyme activities viz., catalase, peroxidase, super oxide dismutase, ascorbate peroxidase and glutathione reductase activities whereas negatively correlated with electrical conductivity, electrolyte leakage and proline content. The decline in physiological and biochemical activity in accelerated aged seeds was associated with impairment in metabolic process caused by membrane damage during ageing and the inability of the seeds to repair and compensate the accumulated damage.

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“…The elimination of low‐MW molecules may contribute to the increase in the SV (Wang et al, ). Suresh, Shah, Kotecha, and Robin () showed that an increase in the SV might be due to the artificial aging caused by the treatment that resulted in the oxidation, causing breaking of the bonds of long chain fatty acids in the oil.…”

Section: Resultsmentioning

confidence: 99%

Effect of the chemical refining process on perilla seed oil composition and oxidative stability

Pan

Wen

Wang

et al. 2019

J Food Process Preserv

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The effect of chemical refining process on the physicochemical characteristics and oxidative stability of perilla seed oil was investigated. We analyzed five samples corresponding to each step of the refining process (degumming, neutralization, bleaching, deodorization, and refined oil). The results indicated that the acid value (2.20–0.24 mg KOH/g) and peroxide value (4.32–1.26 mEq/kg) decreased significantly, while the saponification value (178.81–196.24 mg KOH/g) and p‐anisidine value (3.45–9.55) increased dramatically. There was no significant difference in conjugated diene, except in the degummed oil. Additionally, the refractive index did not change throughout the process. Eleven fatty acids were identified in samples, and there was no significant difference observed among them. The refining process resulted in decreases in total tocopherol content (25.0%) and total phenolic content (51.7%). Degummed, neutralized, bleached, and deodorized oils have high primary oxidation stability, whereas refined oils exhibit low secondary oxidation rates. Practical applications The present study was designed to examine the physicochemical properties of perilla seed oil at various phases of refining, as well as its bioactive compounds and oxidative stability during the process. This study provides a good reference for the industrial parameters of the refining process to obtain high‐quality products for consumers.

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Effect of natural, accelerated and saturated salt accelerated aging on the Jatropha curcas L. seeds in optimizing the yield of seed oil as feedstock for biodiesel

Cited by 11 publications

References 19 publications

A rapid and sensitive method to assess seed longevity through accelerated aging in an invasive plant species

A rapid and sensitive method to assess seed longevity through accelerated aging in an invasive plant species

Effect of Acceleratedly Aged Groundnut (Arachis hypogaea L.) Seeds on Physiological and Biochemical Properties

Effect of the chemical refining process on perilla seed oil composition and oxidative stability

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