Castor Beans Quality Subjected to Different Storage Temperatures and Periods

Abstract

The control of the temperature of the storage air have the ability to improve a better preservation of some types of agricultural products. However, the most effective temperature for storage as well as the duration of storage varies between products. Therefore, special attention should be concentrated on the storage temperature and its effects on the integrity and longevity of the produce. The objective of the present study was to evaluate the effects of storage temperature and storage period on the quality of castor beans. Castor seeds with a water content of approximately 6.1% (w.b.) were stored for 180 days at temperatures of 15, 25 and 35 °C. The quality of the seeds was evaluated every 45 days throughout the study period by measuring dry matter loss, electrical conductivity, color, and the free fatty acid and peroxide content of the crude oil extracted. Our results indicated that: a) higher storage temperature negatively affect the quality of the seeds and the extracted oil; b) the negative effect of temperature increase with longer storage period; c) the storage temperature of 15 °C least affect the quality of castor bean and the extracted oil.

Properties of Grain Corn During Short Term Storage in Tropical Ambient Temperature

“…The Chroma index has shown a decreasing value since the first month of storage, except sample A2, however, later the Chroma index continued to decrease after the second and third months for all samples. The decreasing Chroma indicated a darkening colour of grain, which also similar to the other findings on grain, for instances, coffee and castor beans (Goneli et al, 2018).…”

“…Colour changes were measured using chromameter (Model CR 401, Konica Minolta, Japan) represented by the tristimulus Hunter 𝐿 * 𝑎 * 𝑏 coordinates (Itle, 2009). The variations of the 𝐿 * 𝑎 * 𝑏 coordinates were calculated using equations 1-3, the total colour difference, ∆𝐸 was calculated based on equation 4 and the colour intensity, chroma index is calculated as in equation 5 below as described by (Goneli et al, 2018).…”

“…Furthermore, by determining the Chroma index, the shift in colouration could be confirmed. This index indicates the degree of decrease in the saturation of the grain usual colours, resulting in a more greyish hue (Goneli et al, 2018). The 𝐿 * coordinate indicates darkness or lightness of colour and ranges from black (0) to white (100), while the values of 𝑎 * and 𝑏 * indicate the colour direction (+𝑎 * is the red direction, −𝑎 * is the green direction, +𝑏 * is the yellow direction and −𝑏 * is the blue direction).…”

Effectiveness of Three Terminating Products on Reducing the Residual Moisture in Dwarf Castor Plants: A Preliminary Study of Direct Mechanical Harvesting in Central Greece

“…Unfortunately, if considering not opened and damaged seeds altogether, between 62 and 73% w/w of seeds have to be further processed to either removed damaged seeds or eliminate the hull in unopened seeds. During the storage, broken seeds and foreign material can trigger fermentative process that increase the temperature and reduce the quality of the seeds in few months [28]. Therefore, it is important to investigate the most suitable terminating product to reduce residual moisture in castor plant and allow effective mechanical harvesting, to reduce cost and passes within the value chain.…”

Productive potential and castor bean selection of the FCA-PB cultivar progenies

“…The castor bean belongs to the family Euphorbiacea, genus Ricinus and species Ricinus communis L. according to Ferreira (2006), this culture belongs to the center of origin Absinthia, classified by Vavilov, being this region the place that one finds the greater genetic diversity of the species. This crop has many applications in the industrial area and in the production of biodiesel, having thus, relevant economic importance (Goneli et al, 2018).…”