Maltodextrin on the flow properties of green coconut (Cocos nucifera L.) pulp powder

ABSTRACT The study of the flow properties and particle surfaces of a food powder is essential for predicting its behaviour during processing and commercialization. The objective of this work was to determine the powder flow properties of lyophilized green coconut pulp with different concentrations of maltodextrin. Samples containing 0, 5, 10 and 15% (m/m) maltodextrin were lyophilized, and the flow index (FI), wall friction angles and densities were determined. The microstructure of the powders was evaluated by scanning electron microscopy (SEM). The samples containing 0 and 5% maltodextrin showed 1.87 FI, classifying them as very cohesive powders, and those containing 10 and 15% cohesive powder showed 2.12 and 2.43 FI, respectively. The powder densities varied from 138.6 to 287.6 kg/m3, and the wall friction angle varied from 15.8 to 39.8°. The powder particles presented irregular shapes and rough surfaces, especially in powders containing 0, 5 and 10% maltodextrin. The powder containing 15% had smoother and less agglomerated surfaces. An increase in the amount of maltodextrin added to the pulp made the particles smoother and denser and improved the fluidity of the powder.

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Microstructure and flow properties of lyophilized mango pulp with maltodextrin

Revista Brasileira de Engenharia Agrícola e Ambiental ◽

10.1590/1807-1929/agriambi.v23n2p133-137 ◽

2019 ◽

Vol 23 (2) ◽

pp. 133-137 ◽

Cited By ~ 3

Author(s):

Marcos R. A. Afonso ◽

Brena K. M. Rodrigues ◽

José M. C. da Costa ◽

Ana C. P. Rybka ◽

Nedio J. Wurlitzer

Keyword(s):

Internal Friction ◽

Bulk Density ◽

Friction Angle ◽

Amorphous Structure ◽

Wall Friction ◽

Flow Index ◽

Flow Properties ◽

Freeze Dried ◽

Mango Pulp ◽

And Behavior

ABSTRACT The present study had as objective to determine the flow properties and behavior of lyophilized mango pulp powder as a function of different concentrations of maltodextrin. In the samples of the powders contain 5, 10 and 15% of maltodextrin the angle of effective internal friction, wall friction angle, flow index and bulk density were determined. The microstructure was evaluated by scanning electron microscopy. The freeze-dried samples are characterized as having an amorphous structure, and the drying aid used modified the surface of the particles. The flow index was 3.19, 4.28 and 4.53 for samples containing, respectively, 5, 10 and 15% maltodextrin. Increasing the concentration of maltodextrin in the mango pulp decreased the effective angles of internal friction and wall friction. The bulk density of the powders increased with increasing concentration of maltodextrin for the samples containing 5, 10 and 15% of the maltodextrin, being equal to 597.8, 689.8 and 691.3 kg m-3, respectively. Thus, it was concluded that the addition of maltodextrin modified the shape of the particles, decreased segregation, affected the flow properties of the mango powders, facilitating flow and increasing their bulk density.

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A Comparative Analysis of the Flow Properties between Two Alumina-Based Dry Powders

Advances in Materials Science and Engineering ◽

10.1155/2013/519846 ◽

2013 ◽

Vol 2013 ◽

pp. 1-7 ◽

Cited By ~ 12

Author(s):

Milene Minniti de Campos ◽

Maria do Carmo Ferreira

Keyword(s):

Internal Friction ◽

Moisture Content ◽

Ceramic Powder ◽

Morphological Characteristics ◽

Angle Of Repose ◽

Wall Friction ◽

Flow Index ◽

Alumina Powder ◽

Flow Properties ◽

Angle Of Internal Friction

We measured and compared the flow properties of two alumina-based powders. The alumina powder (AP) is irregularly shaped and has a smooth surface and moisture content of 0.16% (d.b.), and the ceramic powder (CP), obtained after atomization in a spray dryer, is spherical and has a rough surface and moisture content of 1.07%. We measured the Hausner ratio (HR), the static angle of repose (AoR), the flow index (FI), the angle of internal friction, and the wall's friction angle. The properties measured using aerated techniques (AoR and HR) demonstrated that AP presents true cohesiveness (and therefore a difficult flow), while CP presents some cohesiveness and its flow might be classified as half way between difficult and easy flow. Their FI values, which were obtained using a nonaerated technique, enable us to classify the alumina as cohesive and the ceramic powder as an easy-flow powder. The large mean diameter and morphological characteristics of CP reduce interparticle forces and improve flowability, in spite of the higher moisture content of their granules. The angles of internal friction and of wall friction were not significantly different when comparing the two powders.

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Moisture Dependent Dynamic Flow Properties of Coconut Flours

International Journal of Food Engineering ◽

10.1515/ijfe-2015-0325 ◽

2016 ◽

Vol 12 (6) ◽

pp. 577-585 ◽

Cited By ~ 3

Author(s):

M. R. Manikantan ◽

R. P. Kingsly Ambrose ◽

Sajid Alavi

Keyword(s):

Moisture Content ◽

Normal Stress ◽

Flow Characteristics ◽

Coconut Oil ◽

Friction Angle ◽

Wall Friction ◽

Flow Properties ◽

Dynamic Flow ◽

Virgin Coconut Oil ◽

Air Velocity

Abstract The dynamic flow properties of two important coproducts of virgin coconut oil (VCO) i. e. coconut milk residue flour (MRF) and VCO cake flour (CF) were studied. The basic flowability energy of CF was higher than MRF and increased with moisture content. The change in compressibility and shear stress, with applied normal stress and moisture content, indicated that these powders are highly cohesive. For both flours, the energy required to make the powder flow increased with moisture at all experimental air velocity. Moisture did not significantly influence the cohesion and unconfined yield strength of MRF, whereas for CF there was significant effect due to the presence of moisture. The wall friction angle of both the flours increased significantly with moisture and decreased with applied normal stress. The results from this study indicated that, both CF and MRF at around 4.00 % moisture content had better flow characteristics than at higher moisture levels.

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Growth of Dracaena marginata and Spathiphyllum ‘Petite’ in Sphagnum Peat- and Coconut Coir Dust-based Growing Media

Journal of Environmental Horticulture ◽

10.24266/0738-2898-17.1.49 ◽

1999 ◽

Vol 17 (1) ◽

pp. 49-52 ◽

Cited By ~ 4

Author(s):

Robert H. Stamps ◽

Michael R. Evans

Keyword(s):

Growth Parameters ◽

Cocos Nucifera ◽

Greenhouse Production ◽

Growing Media ◽

Sphagnum Peat ◽

Affected Plant ◽

Coir Dust ◽

Media Component ◽

The Media ◽

Cocos Nucifera L

Abstract A comparison was made of Canadian sphagnum peat (SP) and Philippine coconut (Cocos nucifera L.) coir dust (CD) as growing media components for greenhouse production of Dracaena marginata Bak. and Spathiphyllum Schott ‘Petite’. Three soilless foliage plant growing mixes (Cornell, Hybrid, University of Florida #2 [UF-2]) were prepared using either SP or CD and pine bark (PB), vermiculite (V), and/or perlite (P) in the following ratios (% by vol): Cornell = 50 CD or SP:25 V:25 P, Hybrid = 40 CD or SP:30 V:30 PB, UF-2 = 50 CD or SP: 50 PB. Dracaena root growth was not affected by treatments but there were significant mix × media component interactions that affected plant top growth parameters. In general, the growth and quality of D. marginata were reduced by using CD in Cornell, had no effect in Hybrid, and increased in UF-2. S. ‘Petite’ grew equally well in all growing mixes regardless of whether CD or SP was used; however, plants grew more in Cornell and Hybrid than in UF-2. S. ‘Petite’ roots, which were infested with Cylindrocladium spathiphylli, had higher grades when grown in CD than when the media contained SP.

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Etude anatomique des faisceaux pétiolaires de Cocos nucifera L.

Bulletin mensuel de la Société linnéenne de Lyon ◽

10.3406/linly.1959.8028 ◽

1959 ◽

Vol 28 (1) ◽

pp. 4-8

Author(s):

Christian Ginieis

Keyword(s):

Cocos Nucifera ◽

Cocos Nucifera L

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Diversity in Mohachao Narel, a Sweet Endosperm Coconut (Cocos nucifera L.) Population from Maharashtra, India

National Academy Science Letters ◽

10.1007/s40009-013-0128-0 ◽

2013 ◽

Vol 36 (3) ◽

pp. 319-330 ◽

Cited By ~ 2

Author(s):

K. Samsudeen ◽

M. K. Rajesh ◽

D. D. Nagwaker ◽

Raghavan Reshmi ◽

P. Ajith Kumar ◽

...

Keyword(s):

Cocos Nucifera ◽

Cocos Nucifera L

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Cocos nucifera L. oil alleviates lead acetate-induced reproductive toxicity in sexually-matured male Wistar rats

Journal of Basic and Clinical Physiology and Pharmacology ◽

10.1515/jbcpp-2020-0281 ◽

2021 ◽

Vol 0 (0) ◽

Author(s):

Olugbemi T. Olaniyan ◽

Olakunle A. Ojewale ◽

Ayobami Dare ◽

Olufemi Adebayo ◽

Joseph E. Enyojo ◽

...

Keyword(s):

Luteinizing Hormone ◽

Lead Acetate ◽

Wistar Rats ◽

Histological Analysis ◽

Cocos Nucifera ◽

Reproductive Toxicity ◽

Positive Control ◽

Negative Control ◽

Male Wistar Rats ◽

Cocos Nucifera L

Abstract Objectives Lead primarily affects male reproductive functions via hormonal imbalance and morphological damage to the testicular tissue with significant alteration in sperm profile and oxidative markers. Though, different studies have reported that Cocos nucifera L. oil has a wide range of biological effects, this study aimed at investigating the effect of Cocos nucifera L. oil on lead acetate-induced reproductive toxicity in male Wistar rats. Methods Twenty (20) sexually matured male Wistar rats (55–65 days) were randomly distributed into four groups (n=5). Group I (negative control)—distilled water orally for 56 days, Group II (positive control)—5 mg/kg bwt lead acetate intraperitoneally (i.p.) for 14 days, Group III—6.7 mL/kg bwt Cocos nucifera L. oil orally for 56 days and Group IV—lead acetate intraperitoneally (i.p.) for 14 days and Cocos nucifera L. oil for orally for 56 days. Rats were sacrificed by diethyl ether, after which the serum, testis and epididymis were collected and used for semen analysis, biochemical and histological analysis. Results The lead acetate significantly increases (p<0.05) testicular and epididymal malondialdehyde (MDA) levels, while a significant reduction (p<0.05) in sperm parameters, organ weight, testosterone and luteinizing hormone was observed when compared with the negative control. The coadministration of Cocos nucifera oil with lead acetate significantly increases (p<0.05) testosterone, luteinizing hormone, sperm parameters and organ weight, with a significant decrease (p<0.05) in MDA levels compared with positive control. Histological analysis showed that lead acetate distorts testicular cytoarchitecture and germ cell integrity while this was normalized in the cotreated group. Conclusions Cocos nucifera oil attenuates the deleterious effects of lead acetate in male Wistar rats, which could be attributed to its polyphenol content and antioxidant properties.

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