Drum drying process of jabuticaba pulp using corn starch as an additive

Abstract Jabuticaba is a fruit native to Brazil, appreciated for its flavor and is also very nutritious, but it is a seasonal fruit and highly perishable. Therefore, drying is a good alternative for its conservation. The purpose of this work was to use drum drying to obtain jabuticaba flakes using corn starch as the main carrier agent. The sorption isotherm of the flakes at 25 °C was also studied, as well as the determination of the critical storage condition and the estimation of product shelf life through the permeability of different packages to the water vapor using mathematical models. The drum drying conditions were: temperature of 144 °C; residence time of 18 seconds; addition of 20% (dry basis) of corn starch and 0.5% (d.b.) of glyceryl monostearate. The final product was analyzed with respect to its physicochemical and technological properties. The sorption isotherm of the flakes was determined at 25 °C, using the gravimetric method with saturated solutions (0.11 ≤ aw ≤ 0.84). After the process, the flakes presented good retention of anthocyanins and total phenolic compounds, besides a high antioxidant activity. The water solubility of the product was around 70% and the hygroscopicity was approximately 24%. The equilibrium experimental points of the isotherm were better adjusted by the GAB model, with a monolayer moisture value of 12.74% (w.b) and a critical aw of 0.432.

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Effect of Drum-Drying Conditions on the Content of Bioactive Compounds of Broccoli Pulp

Foods ◽

10.3390/foods9091224 ◽

2020 ◽

Vol 9 (9) ◽

pp. 1224

Author(s):

Constanza Córdova ◽

Juan P. Vivanco ◽

Julián Quintero ◽

Andrea Mahn

Keyword(s):

Antioxidant Activity ◽

Ascorbic Acid ◽

Phenolic Compounds ◽

Ascorbic Acid Content ◽

Rotation Frequency ◽

Total Phenolic ◽

Operation Costs ◽

Drum Drying ◽

Attractive Option ◽

Drying Conditions

This work studied the effect of drum-rotation frequency, drum temperature, and water-to-pulp ratio in a double-drum drier on the content of sulforaphane, glucoraphanin, total phenolic compounds, ascorbic acid, and antioxidant activity of broccoli pulp through a multilevel factorial design with one replicate. Drum-drying conditions did not significantly affect sulforaphane content, unlike glucoraphanin, however the poor adherence of broccoli pulp resulted in a final product with undefined shape and heterogeneous color. On the other hand, antioxidant activity was unevenly affected by drying conditions; however, drum-rotation frequency affected it in the same way that phenolic compounds and ascorbic acid, showing a concordant behavior. The ascorbic acid content decreased significantly after drying, and it was highly dependent on the experimental factors, resulting in a regression model that explained 90% of its variability. Drum-rotation frequency of 5 Hz, drum temperature of 125 °C, and water-to-pulp ratio of 0.25 resulted in an apparent increase of sulforaphane and phenolic compounds content of 13.7% and 47.6%, respectively. Drum drying has great potential to fabricate dehydrated broccoli-based foods with functional properties. Besides, since drum drying has low investment and operation costs, it represents a very attractive option for the industrialization of broccoli derivatives.

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The Effects of Nano-SiO2 on Mechanical, Barrier, and Moisture Sorption Isotherm Models of Novel Soluble Soybean Polysaccharide Films

International Journal of Food Engineering ◽

10.1515/ijfe-2015-0148 ◽

2015 ◽

Vol 11 (6) ◽

pp. 833-840 ◽

Cited By ~ 15

Author(s):

Seyedehzahra Ghazihoseini ◽

Niloofar Alipoormazandarani ◽

Abdorreza Mohammadi Nafchi

Keyword(s):

Moisture Content ◽

Sorption Isotherm ◽

Water Solubility ◽

Moisture Sorption ◽

Water Vapor Permeability ◽

Barrier Properties ◽

Isotherm Models ◽

Vapor Permeability ◽

Moisture Sorption Isotherm ◽

Monolayer Moisture

In this research, a novel polysaccharide-based bionanocomposite film was prepared via dispersion casting method. Nano-silicon dioxide (SiO2-N) was incorporated into soluble soybean polysaccharide (SSPS) at different concentrations (i.e., 0%, 1%, 3%, and 5% w/w dried SSPS). Mechanical (tensile strength, elongation at break, and Young’s modulus), physical (moisture content, water solubility, and moisture uptake), and barrier properties of bionanocomposite films were evaluated. Incorporation of 5% SiO2-N to SSPS matrix decreased water vapor permeability (WVP) from 7.96×10−11 to 4.75×10−11 g m−1 s−1 Pa−1 and oxygen permeability from 215 to 96 cm3 µm m−2 day−1 atm−1. Heat seal strength and mechanical properties of SSPS films were improved. Moisture sorption isotherm of SSPS films supported by SiO2-N was shifted to lower moisture content, and monolayer moisture content of the films decreased significantly (p<0.05). In summary, SiO2-N is a potential filler in SSPS-based films for packaging materials.

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ANALISIS FISIKA KIMIA DARI KERANG DARA (Anadara granosa) YANG BERASAL DARI KAYUTANYO KAB. BANGGAI The Analysis of physical chemical from dara shells (Anadara granosa) origin from Kayutanyo, Kab.Banggai

JURNAL PENDIDIKAN GLASSER ◽

10.32529/glasser.v2i2.20 ◽

2018 ◽

Vol 2 (2) ◽

Author(s):

SULASMI ANGGO

Keyword(s):

Protein Content ◽

Water Content ◽

Water Solubility ◽

Gravimetric Method ◽

Fat Content ◽

Carbohydrate Content ◽

Dust Content ◽

Total Dust ◽

Physical Chemical ◽

Anadara Granosa

The Analysis of physical chemical from dara shells (Anadara granosa) origin from Kayutanyo, kab. Banggai, has been conducted.Dara shell meat is sleaned and dried and after that powered with blender. Determine % rendement, water bonding capacity and index water solubility with Anderson method, coarse fat content with gravimetric method and carbohydrate method with “bye difference” decrease method.The result of analysis showed rendement value is 24,35%, water bonding capacity is 1,6248 gram/ml, index water solubility is 0,202 gram/ml, water content is 79,0045%, total dust content is 1,072%, coarse protein content is 2,25%, coarse fat content is 8,47%, carbohydrate content is 9,2035%. Keyword : Dara shells, (Anadara granosa), analysis physical chemical

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Preparation and characterization of corn starch/PVA/glycerol composite films incorporated with ε-polylysine as a novel antimicrobial packaging material

e-Polymers ◽

10.1515/epoly-2020-0019 ◽

2020 ◽

Vol 20 (1) ◽

pp. 154-161 ◽

Cited By ~ 2

Author(s):

Gao Yurong ◽

Li Dapeng

Keyword(s):

Water Solubility ◽

Corn Starch ◽

Composite Films ◽

Antimicrobial Properties ◽

Xrd Analysis ◽

Sem Analysis ◽

Packaging Material ◽

Hydroxyl Group ◽

Electron Microscopic ◽

Antimicrobial Packaging

AbstractCorn starch/polyvinyl alcohol (PVA)/glycerol composite films incorporated with ε-polylysine were prepared, and their properties were investigated. The Fourier-transform infrared (FTIR) spectroscopy indicated that the interactions happened between the amino group of ε-polylysine and hydroxyl group starch/PVA composite films. X-ray diffraction (XRD) analysis showed that the addition of ε-polylysine decreased the intensity of all crystal peaks. Thermogravimetric (TGA) analysis suggested that ε-polylysine improved the thermal stability of composite films. Scanning electron microscopic (SEM) analysis showed that the upper surface of composite films incorporated with ε-polylysine presented more compact and flat surface. The antimicrobial activity of the composite film progressively increased with the increasing of ε-polylysine concentration (P < 0.05). The tensile strength, elongation at break and water absorption significantly increased, whereas water solubility decreased with the increasing of ε-polylysine concentration (P < 0.05). Therefore, the corn starch/PVA/glycerol composite films incorporated with ε-polylysine had good mechanical, physical and antimicrobial properties and could have potential application as a novel antimicrobial packaging material.

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Microwave-assisted extraction of non-polar compounds from pistachio hull and characterization of extracts

Grasas y Aceites ◽

10.3989/gya.0217181 ◽

2018 ◽

Vol 69 (3) ◽

pp. 260 ◽

Cited By ~ 1

Author(s):

H. N. Özbek ◽

D. Koçak Yanık ◽

S. Fadıloğlu ◽

H. Keskin Çavdar ◽

F. Göğüş

Keyword(s):

Microwave Power ◽

Polar Compounds ◽

Good Alternative ◽

Tocopherol Content ◽

Extraction Time ◽

Total Phenolic ◽

Microwave Assisted Extraction ◽

Solid Ratio ◽

Microwave Assisted ◽

Assisted Extraction

Soxhlet and microwave assisted extraction (MAE) methods were used to obtain non-polar compounds from pistachio hull. MAE parameters (liquid to solid ratio, microwave power, and extraction time) were studied to obtain maximum extraction yield. The optimal conditions were found to be liquid to solid ratio of 15:1 (v/w), microwave power of 250 W and extraction time of 12.5 min. The extraction yields were 9.81 and 9.50% for MAE and Soxhlet methods, respectively. The total phenolic content, antioxidant activity and tocopherol content of the extract obtained by MAE was found to be significantly higher than those of the Soxhlet extract (p < 0.05). The results showed that the extract contained α-tocopherols (567.65 mg/kg) and oleic acid (48.46%) as the major tocopherols and fatty acids. These findings propose that hull extracts can be considered as a good source of natural bioactive compounds and MAE can be a good alternative to the traditional Soxhlet method.

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Reinforcement of Thermoplastic Corn Starch with Crosslinked Starch/Chitosan Microparticles

Polymers ◽

10.3390/polym10090985 ◽

2018 ◽

Vol 10 (9) ◽

pp. 985 ◽

Cited By ~ 7

Author(s):

Diana Paiva ◽

André Pereira ◽

Ana Pires ◽

Jorge Martins ◽

Luísa Carvalho ◽

...

Keyword(s):

Water Solubility ◽

Corn Starch ◽

Polymer Network ◽

Xrd Analysis ◽

Thermoplastic Starch ◽

Interpenetrating Polymer Network ◽

Melt Mixing ◽

Chitosan Microparticles ◽

Polysaccharide Composition ◽

Low Solubility

Microparticles of corn starch and chitosan crosslinked with glutaraldehyde, produced by the solvent exchange technique, are studied as reinforcement fillers for thermoplastic corn starch plasticized with glycerol. The presence of 10% w/w chitosan in the microparticles is shown to be essential to guaranteeing effective crosslinking, as demonstrated by water solubility assays. Crosslinked chitosan forms an interpenetrating polymer network with starch chains, producing microparticles with a very low solubility. The thermal stability of the microparticles is in agreement with their polysaccharide composition. An XRD analysis showed that they have crystalline fraction of 32% with Va-type structure, and have no tendency to undergo retrogradation. The tensile strength, Young’s modulus, and toughness of thermoplastic starch increased by the incorporation of the crosslinked starch/chitosan microparticles by melt-mixing. Toughness increased 360% in relation to unfilled thermoplastic starch.

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Production of Carboxymethyl Starches from Oxidized Starches and Determination of Their Tanning Characteristics

Journal of the American Leather Chemists Association ◽

10.34314/jalca.v116i6.4311 ◽

2021 ◽

Vol 116 (6) ◽

Author(s):

Cigdem Kilicarislan Ozkan ◽

Hasan Ozgunay

Keyword(s):

Hydrogen Peroxide ◽

Molecular Weight ◽

Water Solubility ◽

Good Alternative ◽

Oxidation Products ◽

Sodium Metaperiodate ◽

Carboxymethyl Starch ◽

Present Part

Hydrogen peroxide and sodium metaperiodate oxidation of starch and their possible utilization in tanning/retanning were examined in our previous studies. In the present part, accordingly with our previous findings, hydrogen peroxide and sodium metaperiodate oxidation products having appropriate molecular weight/size were selected and additionally carboxymethylated. The yields of the processes (carboxymethyl starches) were characterized comprehensively and the effect of carboxymethylation process on structures and tanning abilities were tried to be identified. The characterization results revealed that the carboxymethyl groups were successfully included into the structure and the water solubility of oxidized starches (especially periodate oxidized ones) increased by carboxymethylation process. From the evaluation of the tanning results and considering its properties i.e. gentle tanning effect with less astringency and correspondingly a relatively soft leather handle and smooth grain, it is concluded that dialdehyde carboxymethyl starch (CMS 1:0.7) can be utilized as yet another good alternative sustainable green tanning/retanning agent from starch.

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The Synthesis and Characterization of PVA-Ketoprofen Cryogel, Biomaterial with Extended Drug Release Properties for Cartilage Replacement

Solid State Phenomena ◽

10.4028/www.scientific.net/ssp.216.205 ◽

2014 ◽

Vol 216 ◽

pp. 205-209

Author(s):

Monica Cretan Stamate ◽

Ciprian Stamate

Keyword(s):

Articular Cartilage ◽

Drug Release ◽

Polyvinyl Alcohol ◽

Water Solubility ◽

Physicochemical Characterization ◽

Gravimetric Method ◽

Controlled Drug Release ◽

High Wear Resistance ◽

Mechanical Resistance ◽

Swelling Properties

The present paper aims to study the possibility to modify the properties of polyvinyl alcohol (pva) cryogels prepared in the presence of ketoprofen in order to replace the damaged articular cartilage. Articular cartilage is the most important part of articulation characterized by very low friction, high wear resistance, and poor regenerative qualities. Polyvinyl alcohol is a non-expensive polymer, versatile and adaptable to various needs, with exceptional properties such as water solubility, biocompatibility, non-toxicity and with capability to form hydrogels by chemical or physical methods. The aims of this paper are the synthesis, the physicochemical characterization and analysis of the tribological properties of pva cryogels for cartilage replacement and the introduction of new concept in medication by creating the cryogel like a controlled drug release system. The morphology of the cryogels, the interaction between the pva macromolecular chains and medicament has been studied by Scanning Electronic Microscopy. The gels swelling in physiologic ser have been monitored by gravimetric method in order to evidence the hydrophilic properties. The mechanical properties of the cryogels have been investigated by dynamic mechanical measurements. In conclusion, the biomaterial obtained provides good swelling properties, mechanical resistance and it is ideal for extended drug release implantable systems.

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Effects of Spray-Drying Temperatures and Ratios of Gum Arabic to Microcrystalline Cellulose on Antioxidant and Physical Properties of Mulberry Juice Powder

Beverages ◽

10.3390/beverages4040101 ◽

2018 ◽

Vol 4 (4) ◽

pp. 101 ◽

Cited By ~ 1

Author(s):

Hoa T.T. Do ◽

Ha V.H. Nguyen

Keyword(s):

Moisture Content ◽

Bulk Density ◽

Spray Drying ◽

Microcrystalline Cellulose ◽

Water Solubility ◽

Gum Arabic ◽

Total Phenolic ◽

Anthocyanin Content ◽

Total Anthocyanin ◽

Mulberry Juice

This study aimed to investigate the influences of inlet air temperatures (120 °C, 130 °C, 140 °C and 150 °C, 160 °C) and the ratios of gum Arabic to microcrystalline cellulose on the quality of mulberry juice powder produced by the spray drying process. Determination of moisture content, bulk density, solubility, total phenolic content (TPC), total anthocyanin content (TAC) and antioxidant capacity (AC) of the obtained powders was performed. The study on temperatures showed that all parameters studied were significantly affected by the shift in temperatures. The powder dried at 160 °C had the highest TPC (38.32 ± 0.36 mg GAE/g DW) and water solubility index (78.70 ± 0.75%); however, it had the lowest moisture content (3.90 ± 0.14%) when compared with the samples dried at other temperatures. Meanwhile, at 140 °C, powder samples with the highest TAC (4.690 ± 0.18 mg cyd-3-glu/g DW) and highest AC (648.09 ± 22.98 µmol TE/g DW), respectively, were obtained. Increasing microcrystalline cellulose and decreasing gum Arabic contents in the carrier mixtures showed significant decreases in moisture content, bulk density, solubility, TPC, TAC and AC.

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Effect of Drum Drying on Physico-chemical Characteristics of Dragon Fruit Peel (Hylocereus polyrhizus)

International Journal of Food Engineering ◽

10.1515/ijfe-2014-0198 ◽

2015 ◽

Vol 11 (2) ◽

pp. 285-293 ◽

Cited By ~ 8

Author(s):

S.L. Chia ◽

G.H. Chong

Keyword(s):

Functional Properties ◽

Radical Scavenging Activity ◽

Radical Scavenging ◽

Total Phenolic ◽

Fruit Peel ◽

Fresh Sample ◽

Drum Drying ◽

Physico Chemical ◽

Dragon Fruit ◽

Hylocereus Polyrhizus

Abstract Dragon fruit (Hylocereus polyrhizus) peel is high in antioxidants and fiber; however, it is discarded during processing. In this study, changes in physico-chemical properties of dragon fruit peel after drum drying were determined. Ground dragon fruit peel was drum dried at 1 rpm with 2 bar steam pressure, then analyzed for physical, chemical and functional properties. The betacyanin content was twofold higher in drum-dried powder (41.55 mg/g dm) than in a fresh sample (80.21 mg/g dm), yet up to 98.62% of the total phenolic content was retained with a 3.328 mg trolox/g dm reduction in the radical scavenging activity. The density of the powder was 0.1315 g/mL with 51.44% soluble in water. The functional properties determined included water holding capacity (2.523 g water/g sample), oil holding capacity (3.565 g oil/g sample) and swelling capacity (6.233 mL/g). The results of this study indicate that drum-dried dragon fruit peel can be considered to contain potentially functional ingredients.

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