Moisture dependent physical properties of lathyrus

Abstract

The moisture dependent physical properties of different lathyrus varieties namely NLK-40, Pratik and Ratan were studied at moisture content of 7.33 to 30.29, 6.75 to 29.95 and 7.90 to 30.90% (d.b.), respectively. The grain size, thousand grain weight, angle of repose, grain volume and surface area were found increased linearly. The grain size was found increased from 4.43 to 4.70, 4.96 to 5.32 and 5.08 to 5.49 mm. Thousand grain weight was found increased from 64.6 to 103.5, 69.1 to 105.3 and 85.3 to 125.6 g. The angle repose was increased from 28.3 to 35.4, 29.5 to 35.8 and 26.9 to 33.5°. The grain volume was increased from 9.13 to 10.38,11.73 to 13.24 and 12.22 to 14.15 mm(3) whereas, surface area increased from 54.78 to 62.29, 70.38 to 79.45 and 73.31 to 84.88 mm(2),respectively with the corresponding increase in moisture content, for NLK-40, Pratik and Ratan. The sphericity and porosity increased initially and then found decreased with increase in further moisture content. The bulk density values decreased linearly from 827.5 to 697.2, 851.3 to 726.3 and 856.0 to 727.4 kg/m(3). The true density values were found decreased from 1288.3 to 1074.3, 1324.0 to 1118.4 and 1277.7 to 1102.5 kg/m(3), respectively for these varieties with the corresponding increase in moisture content.

Modeling sorption phenomena and moisture migration rates in paprika (Capsicum annuum L.) using physicochemical characteristics

“…The decrease in q b of paprika indicates the increase in the volume of conditioned sample at a faster rate compared to increase in mass of sample due to the addition of moisture (Kenghe et al 2013). The change in bulk density was 12.20%.…”

Evaluation of Different Varieties of Lathyrus (<i>Lathyrus sativus</i> L.)

“…Three major principle axes (length, width and thickness) of grain were measured with the help of Vernier caliper (Mitutoyo, Japan) having least count of 0.02 mm. The grain size (D m ) of the grain was calculated by using the relationship used by Kenghe et al (2013). The exact orientation of the grain in determination of different axis is as given in Figure 1.…”

“…True densities were determined with toluene displacement method (Kenghe et al, 2013). The porosity was calculated as the ratio of the difference in true density and bulk density to the true density values.…”

Models for predicting the mass of lime fruits by some engineering properties

“…To design and optimization a machine for various post harvesting operation such as cleaning, transportation, packaging and sorting of crops, the physical attributes and their relationships must be known (Adebowale et al 2011;Ercisli et al 2012). The knowledge of properties can also be used to calculate surface area and volume which are important during modeling of drying, aeration, heating and cooling systems (Kenghe et al 2011). On the other hand, volume and its relationship with packing coefficient are very important because having any information about packing coefficient of fruits can led to efficient control of fruit quality (the price of agricultural produce is strongly depended on its availability and quality characteristics) during storing (Lorestani and Ghari 2012).…”