Moisture Dependent Physical Properties of Grape Seeds

2010 ◽  
Vol 6 (5) ◽  
Author(s):  
Jafar Milani ◽  
Ali Moetamedzadegan
Keyword(s):  
Moisture Content ◽  
Physical Properties ◽  
Geometric Mean ◽  
Seed Mass ◽  
Grape Seed ◽  
Angle Of Repose ◽  
Grape Seeds ◽  
Length Width ◽  
Static Coefficient Of Friction ◽  
Static Coefficient

This study was carried out to determine the effect of moisture content on some physical properties of grape seed. Seven levels of moisture content varying from 12.26 to 24.61% (w.b.) were considered in this study. Length, width, thickness, geometric mean diameter, sphericity and 1000 seed mass increased by 2.58%, 3.63%, 8.36%, 4.78%, 2.14%, and 22.62%, respectively, with the increase of moisture content. Bulk and true density increased from 469.3 to 546.3 kg/m3 and 1058.7 to 1159.3 kg/m3, respectively, while porosity decreased from 55.67 to 52.87%. The angle of repose increased from 21.79 to 29.65° with the increase of moisture content. The hardness decreased from 58.72 to 23.34 N with increase in moisture content. The static coefficient of friction of seeds was determined on concrete, galvanized iron, plywood and glass sheets at various moisture contents. The highest and lowest static coefficients of friction were observed on concrete and glass sheet, respectively.

Effect of Moisture Content on the Physical Properties of Fibered Flaxseed

2007 ◽  
Vol 3 (5) ◽  
Author(s):  
Bo Wang ◽  
Dong Li ◽  
Li-jun Wang ◽  
Zhi-gang Huang ◽  
Lu Zhang ◽  
...  
Keyword(s):  
Stainless Steel ◽  
Moisture Content ◽  
Physical Properties ◽  
Coefficient Of Friction ◽  
Geometric Mean ◽  
Angle Of Repose ◽  
Stainless Steel Surface ◽  
Static Coefficient Of Friction ◽  
Content Range ◽  
Static Coefficient

The physical properties of fibered flaxseed were investigated within moisture content varying from 6.21 to 16.29%. The length, width, thickness and geometric mean diameter increased from 4.20 to 4.44mm, 1.99 to 2.13mm, 0.91 to 0.95mm, and 1.95 to 2.06mm, respectively in the moisture content range. One thousand seed weight increased linearly from 4.22 to 4.62g. The bulk density decreased from 726.783 to 611.872kg/m3, while the true density increased from 1165.265 to 1289.341kg/m3 in the moisture content range. The porosity values of flaxseed increased linearly from 37.67 to 52.54%. The highest static coefficient of friction was found on the plywood surface, while the lowest on the stainless steel surface. The static coefficient of friction increased from 0.467 to 0.972, 0.442 to 0.864, 0.492 to 0.927, and 0.490 to 0.845 for plywood, stainless steel, aluminum sheet and galvanized iron, respectively. The angle of repose increased linearly from 25.7° to 33.8° in the moisture content range. The results are necessary for design of equipment to handling, transportation, processing, and the storage of flaxseed.

Influence of moisture content on physical properties of maize

2012 ◽  
Vol 26 (3) ◽  
pp. 331-334 ◽  
Author(s):  
P. Barnwal ◽  
D. Kadam ◽  
K. Singh
Keyword(s):  
Moisture Content ◽  
Physical Properties ◽  
Geometric Mean ◽  
True Density ◽  
Kernel Length ◽  
Length Width ◽  
Static Coefficient Of Friction ◽  
Maize Kernels ◽  
Static Coefficient ◽  
Kernel Volume

Influence of moisture content on physical properties of maizeThe physical properties of maize kernels have been evaluated as a function of moisture content (12.8-29.0% w.b.). The maize kernel length, width, thickness, geometric mean diameter, surface area, sphericity and kernel volume increased linearly with increase in moisture content. The bulk density and true density decreased while porosity and thousand grains mass increased with increasing moisture content. The static coefficient of friction increased for mild steel sheet, galvanized iron sheet and aluminium sheet surfaces while rupture or cutting force and energy absorbed decreased with increasing moisture content.

scholarly journals Study on some engineering attributes of pine nut (Pinus pinea) to the design of processing equipment

2010 ◽  
Vol 56 (No. 3) ◽  
pp. 99-106 ◽  
Author(s):  
S.M.T. Gharibzahedi ◽  
V. Etemad ◽  
J. Mirarab-Razi ◽  
M. Fos hat
Keyword(s):  
Moisture Content ◽  
Geometric Mean ◽  
Seed Mass ◽  
Static Friction ◽  
Terminal Velocity ◽  
Angle Of Repose ◽  
Engineering Properties ◽  
Pine Nut ◽  
Length Width ◽  
Glass Surfaces

Moisture-dependent engineering properties of pine nut were studied at 6.3, 8.2, 10.8, 14.5, 18.9, and 20.1% moisture content (dry basis). The length, width, thickness, and geometric mean diameter increased significantly (P < 0.05) from 21.75 to 21.85 mm, 7.39 to 7.47 mm, 6.07 to 6.14 mm, and 9.89 to 9.98 mm, respectively, with an increase in moisture content from 6.3% to 20.1%, whereas the increase in sphericity from 45.49% to 45.69% was not significant. Similarly, thousand seed mass, true density, porosity, terminal velocity, and angle of repose increased (P < 0.05) from 0.85 to 0.93 kg, 1043.3 to 1071 kg/m3, 41.31% to 44.57%, 8.67 to 8.83 m/s, and 35.4° to 39°, respectively, with an increase in moisture content under the experimental condition. Moreover, the bulk density decreased significantly (P < 0.05) from 612.3 to 593.6 kg/m3. Coefficient of static friction increased (P < 0.05) from 0.251 to 0.292, 0.241 to 0.271, 0.227 to 0.262, and 0.218 to 0.247 on plywood, galvanized iron sheet, stainless steel, and glass surfaces, respectively, with an increase in moisture content from 6.3% to 20.1%.

Moisture Dependent Selected Engineering Properties of Deenanath Seeds in Relation to Development of Processing Machinery

2021 ◽  
Vol 58 (03) ◽  
pp. 250-261
Author(s):  
Sanjay Kumar Singh ◽  
Sheshrao Kautkar ◽  
P. K. Pathak ◽  
Bholuram Gurjar ◽  
Sunil Swami ◽  
...  
Keyword(s):  
Moisture Content ◽  
Physical Properties ◽  
Geometric Mean ◽  
Seed Mass ◽  
Correlation Coefficients ◽  
Engineering Properties ◽  
True Density ◽  
Linear Relationships ◽  
Mean Diameter ◽  
Length Width

Propagation of grasses through seeds is important in view of vigour and germination. Various grasses as Pennisetum pedicellatum Trin., Cenchrus ciliaris L., Chrysopogan fulvus have lower vigour and germination, due to which they need specific operations as defluffing, separation of true seeds, cleaning and grading by specific machines. In designing a machine for a specific use, physical properties and their behaviour with moisture play an important role. A study was conducted to assess the effect of moisture content at five levels [6.88 - 19.23 %, (d.b.)] on selected physical properties of defluffed Deenanath grass seed. The length, width, thickness, arithmetic mean diameter, and geometric mean diameter of defluffed Deenanath seed increased from 2.30 mm to 2.56 mm, 0.71 mm to 0.96 mm, 0.47 mm to 0.63 mm, 1.16 mm to 1.38 mm, and 0.90 mm to 1.15 mm, respectively, with increase in moisture content 6.88 % to 19.23 %. Bulk density, true density, and porosity decreased from 652.16 kg.m-3 to 585.78 kg.m-3, 852.63 kg.m-3 to 792.71 kg.m-3, and 25.62 % to 24.97 %, respectively, with increase in moisture content from 6.88 % to 19.23 per cent. The aspect ratio, sphericity, surface area, volume, and thousand-seed mass of the seed were in the range of 30.91 - 37.51 %, 0.39 - 0.45, 2.58 - 3.23 mm2 , 3.71 - 4.97 mm3 , and 0.480 - 0.523 g, respectively. Linear relationships with correlation coefficients higher than 0.90 were observed for the physical properties over the experimental range of moisture content.

Physical Properties of Naked Oat Seeds (Avena nuda L.)

2014 ◽  
Vol 10 (2) ◽  
pp. 339-345 ◽  
Author(s):  
Guang-yue Ren ◽  
Ping Yao ◽  
Nan Fu ◽  
Dong Li ◽  
Yubin Lan ◽  
...  
Keyword(s):  
Moisture Content ◽  
Physical Properties ◽  
Geometric Mean ◽  
Static Friction ◽  
Angle Of Repose ◽  
Naked Oat ◽  
Oat Seeds ◽  
Avena Nuda ◽  
Length Width ◽  
Content Range

Abstract Some physical properties of the naked oat seeds were determined as a function of moisture content ranging from 9.56 to 18.07% (wet basis, w.b.). Seed length, width, thickness, and geometric mean diameter were increased from 7.89 to 8.81 mm, 2.32 to 3.09 mm, 1.85 to 2.77 mm, and 3.24 to 4.22 mm, respectively, with the increase of moisture content. The bulk and true densities of the seed samples were decreased from 682.1 to 533.1 kg/m3 and from 1,280.6 to 1,162.8 kg/m3, respectively. The average static friction coefficients of the seeds on the surfaces of plywood, stainless steel, and polypropylene knitted bags were increased from 0.403 to 0.674, from 0.371 to 0.496, and from 0.562 to 0.765, respectively, when the moisture content of these samples were increased from 9.56 to 18.07% (w.b.). The static angle of repose varied from 24.38° to 39.17° in the moisture content range.

scholarly journals Effect of Drying on Selected Physical Properties of “Asontem” Cowpea Variety

ISRN Agronomy ◽  
2012 ◽  
Vol 2012 ◽  
pp. 1-7 ◽  
Author(s):  
Ato Bart-Plange ◽  
Komla Agbeko Dzisi ◽  
Jonathan Ampah
Keyword(s):  
Moisture Content ◽  
Physical Properties ◽  
Average Length ◽  
Geometric Mean ◽  
Static Friction ◽  
Angle Of Repose ◽  
Length Width ◽  
Four Levels ◽  
Content Range ◽  
Cowpea Variety

Storage, handling, processing, and other postharvest operations of agricultural products require information about their physical properties for the design of related machinery. This study was carried out to evaluate the effect of drying on some physical properties of “asontem” cowpea variety within the moisture content range of 19.00% wb and 9.58% wb using standard techniques. Four levels of moisture content were used namely, 19.00%, 15.13%, 11.50%, and 9.58% wb. The average length, width, and thickness decreased with decreasing moisture content from 8.16 to 7.11 mm, 6.36 to 6.28 mm and 4.77 to 4.61 mm respectively. The geometric mean diameter, surface area, and volume decreased nonlinearly with decreasing moisture content from 6.27 to 5.89 mm, 123.88 to 109.46 mm2, and 130.23 to 108.02 mm3, respectively. 1000 grain mass decreased non-linearly from 132.85 to 120.92 g and true density increased non-linearly with decreasing moisture content from 1063.80 to 1185.92 kg/m3. The filling angle of repose decreased non-linearly from 29.34 to 27.92°, while the coefficient of static friction also decreased non-linearly from 0.36 to 0.29, 0.35 to 0.28, and 0.31 to 0.21 for plywood, mild steel, and rubber, respectively.

scholarly journals Moisture-dependent physical properties of kokum seed (Garcinia indica Choisy)

2014 ◽  
Vol 60 (No. 2) ◽  
pp. 75-82 ◽  
Author(s):  
S.P. Sonawane ◽  
G.P. Sharma ◽  
N.J. Thakor ◽  
R.C. Verma
Keyword(s):  
Moisture Content ◽  
Physical Properties ◽  
Average Length ◽  
Geometric Mean ◽  
Seed Mass ◽  
Terminal Velocity ◽  
Regression Equations ◽  
Average Value ◽  
Garcinia Indica ◽  
Static Coefficient Of Friction

Designing the equipment for processing, sorting and sizing of agricultural crops requires information about the crops&rsquo; physical properties. The physical properties of kokum seed were evaluated as a function of moisture content in the range of 7.35 to 25.79% d.b. (dry basis). The average length, width, thickness and one thousand seed mass were 17.17&nbsp;mm, 10.66 mm, 5.87 mm and 410 g, respectively, at a moisture content of 7.35% d.b. The average value of geometric mean diameter and sphericity were 10.19 mm and 59.75%, respectively, at moisture content of 7.35% d.b. As the moisture content increased from 7.35 to 25.79% d.b., the bulk density increased from 345 to 396 kg/m<sup>3</sup>, true density decreased from 1179 to 1070 kg/m<sup>3</sup>, and the corresponding porosity decreased from 65.73 to 55.46%; the repose angle and terminal velocity increased from 32.1 to 42.3&deg; and 4.30 to 6.73 m/s,respectively. The static coefficient of friction increased on three structural surfaces namely, glass (0.59&ndash;0.73), stainless steel (0.81&ndash;0.87) and plywood (0.74&ndash;0.83) in the moisture range from 7.35 to 25.79% d.b. Linear regression equations were used to express the physical properties of kokum seeds as a function of moisture content. &nbsp;

Study on Postharvest Physico-Mechanical and Aerodynamic Properties of Mungbean [Vigna radiate (L.) Wilczek] Seeds

2010 ◽  
Vol 6 (6) ◽  
Author(s):  
Mehran Ghasemlou ◽  
Faramarz Khodaiyan ◽  
Seyed Mohammd Taghi Gharibzahedi ◽  
Ali Moayedi ◽  
Behnam Keshavarz
Keyword(s):  
Moisture Content ◽  
Geometric Mean ◽  
Seed Mass ◽  
Physical And Mechanical Properties ◽  
Terminal Velocity ◽  
Angle Of Repose ◽  
Seed Moisture Content ◽  
Aerodynamic Properties ◽  
Design Calculations ◽  
Static Coefficient Of Friction

Determination of physical and mechanical properties can facilitate the design calculations of harvesting, handling, sorting and processing equipments. In this study, these properties of mungbean have been evaluated as a function of seed moisture content varying from 8.72 to 27.41% (d.b.). In this moisture range, the length, width, thickness, geometric mean diameter and surface area increased significantly (p < 0.05) from 4.32 to 5.10 mm, 3.33 to 3.54 mm, 3.30 to 3.59 mm, 3.62 to 4.01 mm and 41.1 to 50.6 mm2, respectively, whereas sphericity, porosity, bulk and true density decreased significantly (p < 0.05) from 83.80 to 78.63%, 39 to 36.56%, 841.3 to 730.7 kg/m3 and 1379.1 to 1151.8 kg/m3, respectively. Moreover, thousand seed mass, angle of repose and terminal velocity increased (p < 0.01) from 37.3 to 43.8 g, 31.6 to 40.3° and 4.9 to 5.8 m/s, respectively, by increasing the moisture content. The static coefficient of friction of mungbean seed increased against the surfaces of four structural materials, namely plywood (31.54 %), glass (29.54%), stainless steel (21.56%) and galvanized iron sheet (11.41%) as the moisture content increased from 8.72% to 27.41% d.b. Also, the results showed that the force required for initiating seed rupture decreased from 40.56 to 23.04 N and 59.82 to 19.51 N, and the energy absorbed at seed rupture increased from 7.20 to 27.36 mJ and 9.87 to 31.22 mJ by increasing in moisture content from 8.72% to 27.41% d.b. for vertical and horizontal orientations, respectively (p < 0.01).

Physical Properties of Whole Rye Seed (Secale cereal)

2012 ◽  
Vol 8 (4) ◽  
Author(s):  
Mohammad Jouki ◽  
Zahra Emam-Djomeh ◽  
Naimeh Khazaei
Keyword(s):  
Internal Friction ◽  
Moisture Content ◽  
Physical Properties ◽  
Bulk Density ◽  
Coefficient Of Friction ◽  
Average Length ◽  
Angle Of Internal Friction ◽  
Length Width ◽  
Static Coefficient Of Friction ◽  
Static Coefficient

Abstract Certain physical properties of rye – density, true density, angle of internal friction, porosity and static coefficient of friction – are necessary for the design of transport, storage and processing equipment. . These properties were evaluated as a function of moisture content of grain. The grain was tested for bulk density, density, porosity, angle of internal friction and coefficient of friction with various materials at 9% and 13% moisture content (dry basis, db). The average length, width and thickness of the rye grains were 7.11mm, 4.65mm and 3.18mm. It was observed that bulk density decreased linearly from 598.41 to 580.76 kg/m3, as moisture content increased, while density increased linearly from 922.43 to 991.56 kg/m3. The porosity and angle of internal friction increased as moisture increased. The porosity increased linearly from 37.00% to 40.50%, and the angle of internal friction increased from 21.500 to 25.000. The static coefficient of friction increased from 0.283 to 0.412, 0.345 to 0.438, and 0.380 to 0.461 for glass, galvanized iron and wood surfaces respectively.

scholarly journals Evaluation and Modeling Some Engineering Properties of Three Safflower Varieties

2015 ◽  
Vol 47 (4) ◽  
pp. 23-40
Author(s):  
F. Shahbazi
Keyword(s):  
Moisture Content ◽  
Geometric Mean ◽  
Static Friction ◽  
Terminal Velocity ◽  
Galvanized Steel ◽  
Angle Of Repose ◽  
Engineering Properties ◽  
Seed Moisture Content ◽  
Seed Moisture ◽  
Static Coefficient Of Friction

Abstract Several physical properties of three safflower cultivars (IL-111, LRV51-51 and Zarghan279) at moisture contents of 10, 15, 20 and 25% were determined and compared. All the linear dimensions, geometric mean diameter and sphericity of safflower seeds increase linearly with increase in seed moisture content. The values of geometric properties were higher for IL-111cultivar than the LRV51-51 and Zarghan279 cultivars. The values of the bulk densities decreased, whereas the thousand seeds mass, true density and porosity were increased with increase in seed moisture content. All the gravimetric properties for the three cultivars of safflower were significantly different (p<0.05). The values of the terminal velocity for all cultivars were significantly increased as the moisture content increased. The terminal velocity for the three cultivars of safflower were significantly different (p<0.05). On the two different surfaces, the coefficient of static friction of the IL-111 cultivar was significantly greater than that of the other cultivars. The static coefficient of friction was higher on plywood and lower for galvanized steel. The values of the angle of repose increased with increase of the moisture content. The values of the angle of repose for Zarghan279 cultivar were higher than the IL-111, LRV51-51 cultivars.

Sign in / Sign up

Export Citation Format

Share Document