Abstract
Open pore porosity of spaghetti was measured by helium (He) gas pycnometer and mercury (Hg) porosimetry and it was observed as 0.025 and 0.023, respectively. Pore size distribution curve from mercury porosimetry indicated two sharp crests, at alternate position of 59±8 μm and 6.4±0.9 μm diameter pore; while Scanning Electron Microscopy (SEM) showed two types of pores, first class was cracks and second one was holes. The average width of the cracks (channel) and diameters of holes were determined as 3.6±1.5 µm and 1.0±0.3, respectively. The moisture sorption isotherm of spaghetti was measured by dynamic sorption method and modeled by Brunauer-Emmett-Teller (BET) and Guggenheim-Anderson-de Boer (GAM) models. The values of BET monomolecular layer were observed as 3.24 and 5.91 kg water/kg dry solids, respectively for adsorption and desorption cycles.
Funding source: Sultan Qaboos University
Award Identifier / Grant number: SR/AGR/PLANT/01/01
Funding statement: The project was supported by the Sultan Qaboos University. The autosorp and MDSC were purchased from the His Majesty’s Research Trust Fund (SR/AGR/PLANT/01/01), Sultanate of Oman.
References
1. Lewicki PP. Effect of pre-drying treatment, drying and rehydration on plant tissue properties. Int J Food Prop. 1998;1(1):1–22.10.1080/10942919809524561Search in Google Scholar
2. Prakotmak P, Soponronnarit S, Prachayawarakorn S. Modelling of moisture diffusion in pores of banana foam mat using a 2-D stochastic pore network: determination of moisture diffusion coefficient during adsorption. J Food Eng. 2010;96(1):119–126.10.1016/j.jfoodeng.2009.07.004Search in Google Scholar
3. Farkas BE, Singh RP. Physical properties of air-dried and freeze-dried chicken white meat. J Food Sci. 1991;56(3):611–615.10.1111/j.1365-2621.1991.tb05341.xSearch in Google Scholar
4. Scanlon MG, Day AJ, Povey MJ. Shear stiffness and density in potato parenchyma. Int J Food Sci Technol. 1998;33:461–464.10.1046/j.1365-2621.1998.00193.xSearch in Google Scholar
5. Karathanos VT, Anglea SA, Karel M. Collapse of structure during drying of celery. Drying Technol. 1993;11(5):1005–1023.10.1080/07373939308916880Search in Google Scholar
6. Sagar VR, Suresh KP. Recent advances in drying and dehydration of fruits and vegetables: a review. J Food Sci Technol. 2010;47(1):15–26.10.1007/s13197-010-0010-8Search in Google Scholar
7. Singh F, Katiyar VK, Singh BP. Mathematical modeling to study influence of porosity on apple and potato during dehydration. J Food Sci Technol. 2015 Sep;52(9):5442–5455.10.1007/s13197-014-1647-5Search in Google Scholar
8. Khalloufi S, Kharaghani A, Cristhian A-R, Nijsse J, Gerard van D, Tsotsas E. Monitoring of initial porosity and new pores formation during drying: a scientific debate and a technical challenge. Trends Food Sci Technol. 2015;45(2):179–186.10.1016/j.tifs.2015.06.011Search in Google Scholar
9. Rahman MS. Towards prediction of porosity in foods during drying: a brief review. Drying Technol. 2001;19:3–15.10.1081/DRT-100001349Search in Google Scholar
10. Rahman MS, Al-Amri O, Al-Bulushi IM. Pores and physico-chemical characteristics of dried tuna produced by different methods of drying. J Food Eng. 2002;53:301–313.10.1016/S0260-8774(01)00169-8Search in Google Scholar
11. Rahman MS, Al-Zakwani I, Guizani N. Pore formation in apple during air-drying as a function of temperature: porosity and pore-size distribution. J Sci Food Agric. 2005;85:979–989.10.1002/jsfa.2056Search in Google Scholar
12. Sablani SS, Rahman MS, Al-Kuseibi MK, Al-Habsi NA, Al-Belushi RH, Al-Marhubi I, et al. Influence of shelf temperature on pore formation in garlic during freeze-drying. J Food Eng. 2007;80:68–79.10.1016/j.jfoodeng.2006.05.010Search in Google Scholar
13. Stanley DW. Food texture and microstructure. In: Moskowitz HR, editors. Food texture. NY: Marcel Dekker, Inc., 1987.Search in Google Scholar
14. Fazaeli M, Tahmasebi M, Emam DZ. Characterization of food texture: application of microscopic technology. In: Méndez-Vilas A, editors. Current microscopy contributions to advances in science and technology. Iran: Transfer Properties Lab (TPL), University of Tehran, 2012:855–871.Search in Google Scholar
15. Khalloufi S, Ratti C. Quality deterioration of freeze-dried foods as explained by their glass transition temperature and internal structure. J Food Sci. 2003 4;68(3):892–903.10.1111/j.1365-2621.2003.tb08262.xSearch in Google Scholar
16. Gaur RC. Environmental engineering laboratory manual. New Delhi: New Age International Publishers, 2008.Search in Google Scholar
17. Bai Y, Rahman MS, Perera CO, Smith B, Melton LD. Structural changes in apple rings during convection air-drying with controlled temperature and humidity. J Agric Food Chem. 2002;50(11):3179–3185.10.1021/jf011354sSearch in Google Scholar
18. Bengtsson GB, Rahman MS, Stanley RA, Perera CO. Apple rings as model for fruit drying behavior- effects of surfactant and reduced osmolality reveal biological mechanisms. J Food Sci. 2003;68(2):563–569.10.1111/j.1365-2621.2003.tb05712.xSearch in Google Scholar
19. Rahman MS, Al-Belushi RH. Dynamic isopiestic method (DIM): measuring moisture sorption isotherm of freeze-dried garlic powder and other potential uses of DIM. Int J Food Prop. 2006;9(3):421–437.10.1080/10942910600596134Search in Google Scholar
20. Brunauer S, Emmett PH, Teller E. Adsorption of gases in multimolecular layers. J Am Chem Soc. 1938;60(2):309–319.10.1021/ja01269a023Search in Google Scholar
21. Labuza TP. Sorption phenomena in foods. Food Technol. 1968;22:263–272.Search in Google Scholar
22. SAS. SAS users’ guide: statistics. NC: SAS Institute, 2001.Search in Google Scholar
23. Anderson RB. Modification of the Brunauer, Emmett and Teller equation. J Am Chem Soc. 1946;68:686–691.10.1021/ja01185a017Search in Google Scholar
24. De Boer JH. The dynamic character of adsorption. Oxford: Clarendon Press, 1953.Search in Google Scholar
25. Guggenheim EA. Application of statistical mechanics. Oxford: Clarendon Press, 1966.Search in Google Scholar
26. Hicsasmaz Z, Clayton JT. Characterization of the pore structure of starch based food materials. Food Struct. 1992;11:115–132.Search in Google Scholar
27. Karathanos VT, Saravacos GD. Porosity and pore size distribution of starch materials. J Food Eng. 1993 1;18(3):259–280.10.1016/0260-8774(93)90090-7Search in Google Scholar
28. McDonald K, Sun D. Pore size distribution and structure of a cooked beef product as affected by vacuum cooling. J Food Process Eng. 2001;24:381–403.10.1111/j.1745-4530.2001.tb00550.xSearch in Google Scholar
29. Ngadi MO, Kassama LS, Raghavan GS. Porosity and pore size distribution in cooked meat patties containing soy protein. Can Biosyst Eng. 2001;43(3):17–24.Search in Google Scholar
30. Rahman MS, Sablani SS. Structural characteristics of freeze-dried abalone: porosimetry and puncture test. Trans IChemE Part C. 2003;81(C4):309–315.10.1205/096030803322756394Search in Google Scholar
31. Tang Y, Zhou J, Ren X, Yang Q. Dynamic response and deformation characteristic of saturated soft clay under subway vehicle loading. Beijing : Springer Science Press Ltd, 2014.10.1007/978-3-642-41987-4Search in Google Scholar
32. Xiong X, Narsimham G, Okos MR. Effect of comparison and pore structure on binding energy and effective diffusivity of moisture in porous food. J Food Eng. 1991;15:187–208.10.1016/0260-8774(92)90050-GSearch in Google Scholar
33. Karathanos VT, Kanellopoulos NK, Belessiotis VG. Development of porous structure during air drying of agricultural plant products. J Food Eng. 1996;29:167–183.10.1016/0260-8774(95)00058-5Search in Google Scholar
34. Iglesias HA, Chiride J. Isosteric heats of water sorption on dehydrated foods. Part II. Hysteresis and heat of sorption comparison with BET theory. Food Sci Technol. 1976;9:123–127.Search in Google Scholar
35. Karel M. Recent research and development in the field of low-moisture and intermediate-moisture foods. CRC Crit Rev Food Technol. 1973;3:329–373.10.1080/10408397309527144Search in Google Scholar
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Articles in the same Issue
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Articles in the same Issue
- Research Articles
- Effect of Cooking Conditions on Quality Characteristics of Confit Cod: Prediction by MRI
- Conditioning reduces kernel damage when impact shelling almonds
- Quality Enhancement of Tapioca Starch Gel using Sucrose and Xanthan Gum
- Characteristics of Pores as Measured by Porosimetry and Microscopy Considering Spaghetti as a Model System
- Improvement of Gel Properties of Fish Gelatin Using Gellan
- Drying Characteristics and Quality of Kiwifruit Slices with/without Osmotic Dehydration under Short- and Medium-Wave Infrared Radiation Drying
- Optimization of the Spray Drying Operating Conditions for Producing the Powder Mixture of Gum Arabic and Maltodextrin
- Modification of Konjac Glucomannan by Reduced-Pressure Radio-Frequency Air Plasma
- The Controllable Preparation, Properties and Structural Characteristics of Xylitol/Menthol Co-crystals
- Short Communications
- Effect of Maltodextrin on Physical Properties of Granulated Xanthan Gum Prepared by Fluidized-Bed Granulator