Shelf Life Estimation of Packaged Dried Foods as Affected by Choice of Moisture Sorption Isotherm Models

Chocomix chocolate beverage powder is one of the increased value-added cocoa products by Griya Cokelat Nglanggeran. The aimed of this study to estimate the shelf life using Accelerated Shelf Life Testing (ASLT) based on critical moisture content. Results showed that critical moisture content of Chocomix was 4.01 % (db). Moisture sorption isotherm (MSI) curve of Chocomix at 28oC was type II isothermic sigmoidal with 2 curves at the ranged of water activity between 0.24 and 0.68; and the equation was y = 86.584X3 – 91.893X2 + 28.818X – 0.470. The calculation showed that estimated shelf life of Chocomix stored in 51.89 µm thick package at 28oC was 16.4 months.Keywords: chocolate powder, critical moisture content, moisture sorption isotherm, shelf life

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Isoterm Sorpsi Air pada Tepung Ubi Jalar Terfermentasi dengan Angkak

Jurnal Kimia VALENSI ◽

10.15408/jkv.v3i1.4814 ◽

2017 ◽

Vol 3 (1) ◽

pp. 71-78 ◽

Cited By ~ 1

Author(s):

Yulinda Eka Ayu Rukmawati ◽

Sri Hartini ◽

Margaretha Novian Cahyanti

Keyword(s):

Sweet Potato ◽

Sorption Isotherm ◽

Moisture Sorption ◽

Isotherm Models ◽

Red Yeast Rice ◽

Potato Flour ◽

Red Yeast ◽

Moisture Sorption Isotherm ◽

Water Sorption Isotherm ◽

Sweet Potato Flour

The research was aimed to obtain moisture sorption curve , moisture sorption isotherm models and obtain determine the water content monoleyer of fermented sweet potato flour with red yeast rice.The moisture sorption isotherm model used are GAB (Guggenheim Anderson deBoer), BET (Brunauer Emmet Teller) and Caurie.Meanwhile, the test of modelling accuray by MRD (Mean Relative Deviation). The results showed that the water sorption isotherm curve of sweet potato flour fermented with red yeast rice Sigmoid shaped the approach of type II. The precise mathematical models are models of GAB (Guggenheim Anderson deBoer) with a value of MRD at a temperature of 30 °C, 35 °C, 40 °C respectively at 4.41%, to 2.50%, 3.37%. Moisture content of the monolayer at temperature of 30 °C, 35 °C and 40 °C in GAB model was 7.34%, 6.57%, 16.09%, BET model was 2.09%, 1.05%, 4.26%, and Caurie model was 1.41%, 1.36%, 1.42%.DOI: http://dx.doi.org/10.15408/jkv.v0i0.4814

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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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Statistical evaluation of four-parameter moisture sorption isotherm models

Journal on Processing and Energy in Agriculture ◽

10.5937/jpea24-25458 ◽

2020 ◽

Vol 24 (1) ◽

pp. 1-5

Author(s):

Vangelce Mitrevski ◽

Cvetanka Mitrevska ◽

Mirko Babić ◽

Borce Mitrevski

Keyword(s):

Sorption Isotherm ◽

Statistical Evaluation ◽

Moisture Sorption ◽

Isotherm Models ◽

Moisture Sorption Isotherm

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Models of Moisture Sorption Isotherm and The Estimation of Red Ginger Powder Shelf Life in Various Packaging Materials

Jurnal Keteknikan Pertanian ◽

10.19028/jtep.08.1.23-28 ◽

2020 ◽

Vol 8 (1) ◽

pp. 23-28

Author(s):

Riska Juliana ◽

Rokhani Hasbullah ◽

Sutrisno Suro Mardjan

Keyword(s):

Particle Size ◽

Moisture Content ◽

Shelf Life ◽

Sorption Isotherm ◽

Gravimetric Method ◽

Moisture Sorption ◽

Packaging Materials ◽

Moisture Sorption Isotherm ◽

Ginger Powder ◽

Red Ginger

Abstract In the processing, the red ginger powder was dried at 50°C. Red ginger powder is hygroscopic, so it is easy to absorb moisture. This research aims to determine (i) the isothermic absorption curve model in red ginger powder with different fineness modulus and (ii) the expiration date using the critical moisture content method in various types of packaging materials. Moisture sorption isotherm of red ginger powder was determined by the static gravimetric method at 300C. The relationship equilibrium moisture content between relative humidity (RH) is described by the Hasley, Chen-Clayton, Henderson, Caurie, and Oswin Models. The Estimated shelf life is determined using the ASLT (accelerated shelf-life testing) method and calculated using the Labuza model with a critical water content approach. The results obtained that moisture sorption isotherm red ginger powder has sigmoid shape a type II. Henderson is the model that illustrates the accuracy of the ISA curve of red ginger powder of 60 mesh particle size while the Chen-Clayton Model illustrates the accuracy of the ISA curve of red ginger powder of particle size of 80 mesh. The shelf life of red ginger powder is 60 mesh particle size and using HDPE, PP, and aluminum foil packaging which is stored at 75% RH and 300C temperature is 118.85 days, 467.63, and 609.26 days, respectively. The shelf life of red ginger powder 80 particle size is 148.17 days, 582.98 days and 759.54 days.

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