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Pang J, Guan E, Yang Y, Li M, Bian K. Effects of wheat flour particle size on flour physicochemical properties and steamed bread quality. Food Sci Nutr 2021; 9:4691-4700. [PMID: 34531983 PMCID: PMC8441369 DOI: 10.1002/fsn3.2008] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2020] [Revised: 10/09/2020] [Accepted: 10/10/2020] [Indexed: 11/07/2022] Open
Abstract
In this study, differently sized particles of wheat flour (from 52.36 μm to 108.89 μm) were obtained by adjusting the distance between the rolls (0.02, 0.04, 0.06, 0.08, and 0.1 mm) of a heart mill. Results showed that reducing the particle size significantly increased the damaged starch (DS) content. Uniaxial tensile measurement of dough showed that reducing the particle size of wheat flour can effectively increase the maximum tensile resistance, but the extensibility reaches the maximum in samples at medium particle diameter (78 and 66 μm). Additionally, the ratio of dynamic moduli (G″/G') decreased with a reducing particle size. The results of disulfide bond content, gluten microstructure, showed that finer flour granulation can strengthen the gluten network. The steamed bread (SB) making test showed that SB made from wheat flour of a smaller particle size had a significantly smaller specific volume than that made from a larger particle size. The texture profile analysis showed that with a decrease of wheat flour particle size, the hardness, chewiness of SB increased, the resilience decreased, and there was no significant difference in adhesiveness. Overall, the quality of SB made flour of medium particles (78 μm) is better.
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Affiliation(s)
- Jinyue Pang
- College of Food Science and EngineeringHenan University of TechnologyZhengzhouChina
| | - Erqi Guan
- College of Food Science and EngineeringHenan University of TechnologyZhengzhouChina
- Henan Food Crop Collaborative Innovation CenterZhengzhouChina
| | - Yuling Yang
- College of Food Science and EngineeringHenan University of TechnologyZhengzhouChina
| | - Mengmeng Li
- College of Food Science and EngineeringHenan University of TechnologyZhengzhouChina
| | - Ke Bian
- College of Food Science and EngineeringHenan University of TechnologyZhengzhouChina
- Henan Food Crop Collaborative Innovation CenterZhengzhouChina
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2
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Gouyo T, Rondet É, Mestres C, Hofleitner C, Bohuon P. Microstructure analysis of crust during deep-fat or hot-air frying to understand French fry texture. J FOOD ENG 2021. [DOI: 10.1016/j.jfoodeng.2021.110484] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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3
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Liang Y, Qu Z, Liu M, Wang J, Zhu M, Liu Z, Li J, Zhan X, Jia F. Effect of curdlan on the quality of frozen-cooked noodles during frozen storage. J Cereal Sci 2020. [DOI: 10.1016/j.jcs.2020.103019] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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4
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Metilli L, Francis M, Povey M, Lazidis A, Marty-Terrade S, Ray J, Simone E. Latest advances in imaging techniques for characterizing soft, multiphasic food materials. Adv Colloid Interface Sci 2020; 279:102154. [PMID: 32330733 DOI: 10.1016/j.cis.2020.102154] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2019] [Revised: 02/28/2020] [Accepted: 04/03/2020] [Indexed: 01/29/2023]
Abstract
Over the last two decades, the development and production of innovative, customer-tailored food products with enhanced health benefits have seen major advances. However, the manufacture of edible materials with tuned physical and organoleptic properties requires a good knowledge of food microstructure and its relationship to the macroscopic properties of the final food product. Food products are complex materials, often consisting of multiple phases. Furthermore, each phase usually contains a variety of biological macromolecules, such as carbohydrates, proteins and lipids, as well as water droplets and gas bubbles. Micronutrients, such as vitamins and minerals, might also play an important role in determining and engineering food microstructure. Considering this complexity, highly advanced physio-chemical techniques are required for characterizing the microstructure of food systems prior to, during and after processing. Fast, in situ techniques are also essential for industrial applications. Due to the wide variety of instruments and methods, the scope of this paper is focused only on the latest advances of selected food characterization techniques, with emphasis on soft, multi-phasic food materials.
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Livingston DP, Tuong TD. Using Pixel-Based Microscope Images to Generate 3D Reconstructions of Frozen and Thawed Plant Tissue. Methods Mol Biol 2020; 2156:119-139. [PMID: 32607979 DOI: 10.1007/978-1-0716-0660-5_10] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Histological analysis of frozen and thawed plants has been conducted for many years but the observation of individual sections only provides a two-dimensional representation of a three-dimensional phenomenon. Currently available optical sectioning techniques for viewing internal structures in three dimensions are either low in resolution or the instrument cannot penetrate deep enough into the tissue to visualize the whole plant. Methods using higher resolution equipment are expensive and often require time-consuming training. In addition, conventional stains cannot be used for optical sectioning techniques. We present a relatively simple and less expensive technique using pixel-based (JPEG) images of conventionally stained histological sections of an Arabidopsis thaliana plant. The technique uses commercially available software to generate a 3D representation of internal structures.
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Affiliation(s)
| | - Tan D Tuong
- USDA-ARS and North Carolina State University, Raleigh, NC, USA
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6
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Rathnayake HA, Navaratne SB, Navaratne CM. Porous Crumb Structure of Leavened Baked Products. INTERNATIONAL JOURNAL OF FOOD SCIENCE 2018; 2018:8187318. [PMID: 30155475 PMCID: PMC6098858 DOI: 10.1155/2018/8187318] [Citation(s) in RCA: 34] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/05/2018] [Accepted: 07/18/2018] [Indexed: 11/17/2022]
Abstract
Quality evaluation of the porous crumb structure of leavened baked goods, especially bread, has become a vast study area of which various research studies have been carried out up to date. Here is a brief review focusing on those studies with six main parts including porous crumb structure development, crumb cellular structure analysis, application of fractal dimension for evaluating crumb cellular structure, mechanical and sensorial properties of crumb structure, changes of porous crumb structure with staling, and modifications to obtain a well-developed porous crumb structure and retard staling. Development of the porous crumb structure mainly depends on dough ingredients and processing conditions. Hence, certain modifications for those factors (incorporating food hydrocolloids, emulsifiers, improvers, etc.) have been conducted by cereal sciences for obtaining well-developed porous crumb structure and retard staling. Several image analysis methods are available for analyzing microstructural features of porous crumb structure, which can directly affect the mechanical and sensorial properties of the final product. A product with a well-developed porous crumb structure may contain the property of higher gas retention capacity which results in a product with increased volume and reduced crumb hardness with appealing sensorial properties.
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Affiliation(s)
- H. A. Rathnayake
- Department of Food Science and Technology, Faculty of Applied Sciences, University of Sri Jayewardenepura, Gangodawila, Nugegoda, Sri Lanka
| | - S. B. Navaratne
- Department of Food Science and Technology, Faculty of Applied Sciences, University of Sri Jayewardenepura, Gangodawila, Nugegoda, Sri Lanka
| | - C. M. Navaratne
- Department of Agricultural Engineering, Faculty of Agriculture, University of Ruhuna, Mapalana, Kamburupitiya, Sri Lanka
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7
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Ediriweera MK, Tennekoon KH, Samarakoon SR. In vitro assays and techniques utilized in anticancer drug discovery. J Appl Toxicol 2018; 39:38-71. [DOI: 10.1002/jat.3658] [Citation(s) in RCA: 54] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2018] [Revised: 06/01/2018] [Accepted: 06/04/2018] [Indexed: 12/12/2022]
Affiliation(s)
- Meran Keshawa Ediriweera
- Institute of Biochemistry, Molecular Biology and Biotechnology; University of Colombo; Colombo 03 Sri Lanka
| | - Kamani Hemamala Tennekoon
- Institute of Biochemistry, Molecular Biology and Biotechnology; University of Colombo; Colombo 03 Sri Lanka
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8
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Zalazar AL, Gliemmo MF, Campos CA. Data on the physical characterization of oil in water emulsions. Data Brief 2016; 9:96-9. [PMID: 27631021 PMCID: PMC5014752 DOI: 10.1016/j.dib.2016.08.038] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2016] [Revised: 08/17/2016] [Accepted: 08/20/2016] [Indexed: 12/02/2022] Open
Abstract
This article contains experimental data and images for the physical characterization of oil in water emulsions. Mentioned data are related to the research article “Effect of stabilizers, oil level and structure on the growth of Zygosaccharomyces bailii and on physical stability of model systems simulating acid sauces” (A.L. Zalazar, M.F. Gliemmo, C.A. Campos, 2016) [1]. Physical characterization of emulsions was performed through the evaluation of Span and Specific Surface Area (SSA) determined by light scattering using a Mastersizer. Furthermore, microscopy images were recorded by confocal scanning laser microscopy (CSLM). The latter are presented to collaborate in the analysis of emulsion microstructure.
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Affiliation(s)
- Aldana L Zalazar
- Universidad de Buenos Aires, Facultad de Ciencias Exactas y Naturales, Departamento de Industrias, Buenos Aires, Argentina; Consejo Nacional de Investigaciones, Científicas y Técnicas de la República Argentina, Argentina
| | - María F Gliemmo
- Universidad de Buenos Aires, Facultad de Ciencias Exactas y Naturales, Departamento de Industrias, Buenos Aires, Argentina; Consejo Nacional de Investigaciones, Científicas y Técnicas de la República Argentina, Argentina
| | - Carmen A Campos
- Universidad de Buenos Aires, Facultad de Ciencias Exactas y Naturales, Departamento de Industrias, Buenos Aires, Argentina; Consejo Nacional de Investigaciones, Científicas y Técnicas de la República Argentina, Argentina
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9
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Livingston DP, Tuong TD. Three-dimensional reconstruction of frozen and thawed plant tissues from microscopic images. Methods Mol Biol 2015; 1166:117-37. [PMID: 24852633 DOI: 10.1007/978-1-4939-0844-8_11] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/16/2023]
Abstract
Histological analysis of frozen and thawed plants has been conducted for many years but the observation of individual sections provides only a 2-dimensional representation of a 3-dimensional phenomenon. Most techniques for viewing internal plant structure in three dimensions are either low in resolution or the instrument cannot penetrate deep enough into the tissue to visualize the whole plant. Techniques with higher resolution are expensive and equipment often requires time-consuming training. We present a relatively simple and less-expensive technique using pixel-based (JPEG) images of histological sections of an Arabidopsis thaliana plant and commercially available software to generate 3D reconstructions of internal structures. The technique has proven to work just as effectively for images from medical histology.
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Affiliation(s)
- David P Livingston
- USDA-ARS and North Carolina State University, 840 Method Road, Unit 3, Raleigh, NC, 27695, USA,
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10
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Abadian PN, Tandogan N, Jamieson JJ, Goluch ED. Using surface plasmon resonance imaging to study bacterial biofilms. BIOMICROFLUIDICS 2014; 8:021804. [PMID: 24753735 PMCID: PMC3977793 DOI: 10.1063/1.4867739] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/23/2013] [Accepted: 02/21/2014] [Indexed: 05/28/2023]
Abstract
This paper describes the use of Surface Plasmon Resonance imaging (SPRi) as an emerging technique to study bacterial physiology in real-time without labels. The overwhelming majority of bacteria on earth exist in large multicellular communities known as biofilms. Biofilms are especially problematic because they facilitate the survival of pathogens, leading to chronic and recurring infections as well as costly industrial complications. Monitoring biofilm accumulation and removal is therefore critical in these and other applications. SPRi uniquely provides label-free, high-resolution images of biomass coverage on large channel surfaces up to 1 cm(2) in real time, which allow quantitative assessment of biofilm dynamics. The rapid imaging capabilities of this technique are particularly relevant for multicellular bacterial studies, as these cells can swim several body lengths per second and divide multiple times per hour. We present here the first application of SPRi to image Escherichia coli and Pseudomonas aeruginosa cells moving, attaching, and forming biofilms across a large surface. This is also the first time that biofilm removal has been visualized with SPRi, which has important implications for monitoring the biofouling and regeneration of fluidic systems. Initial images of the removal process show that the biofilm releases from the surface as a wave along the direction of the fluid flow.
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Affiliation(s)
- Pegah N Abadian
- Department of Chemical Engineering, Northeastern University, 360 Huntington Ave., 313SN, Boston, Massachusetts 02115, USA
| | - Nil Tandogan
- Department of Chemical Engineering, Northeastern University, 360 Huntington Ave., 313SN, Boston, Massachusetts 02115, USA
| | - John J Jamieson
- Department of Chemical Engineering, Northeastern University, 360 Huntington Ave., 313SN, Boston, Massachusetts 02115, USA
| | - Edgar D Goluch
- Department of Chemical Engineering, Northeastern University, 360 Huntington Ave., 313SN, Boston, Massachusetts 02115, USA
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11
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Heilig A, Hahn C, Erpenbach K, Kübler K, Hinrichs J. Determination of Aroma Volatile Diffusion Coefficients in Set-Type Acidified Dairy Matrices of Different Composition and Microstructure by Means of the Concentration Profile Technique in Combination with Headspace Gas Chromatography. J Texture Stud 2013. [DOI: 10.1111/jtxs.12032] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Andrej Heilig
- Dairy Science and Technology; University of Hohenheim; Stuttgart 70593 Germany
| | - Christian Hahn
- Dairy Science and Technology; University of Hohenheim; Stuttgart 70593 Germany
| | | | - Katya Kübler
- Sachsenmilch Leppersdorf GmbH; Leppersdorf Germany
| | - Jörg Hinrichs
- Dairy Science and Technology; University of Hohenheim; Stuttgart 70593 Germany
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12
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Proof of concept studies to confirm the delivery of curcumin loaded solid lipid nanoparticles (C-SLNs) to brain. Int J Pharm 2013; 448:354-9. [DOI: 10.1016/j.ijpharm.2013.03.046] [Citation(s) in RCA: 81] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2012] [Revised: 03/22/2013] [Accepted: 03/23/2013] [Indexed: 11/21/2022]
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13
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Mohammadi M, Sharp KV. Experimental Techniques for Bubble Dynamics Analysis in Microchannels: A Review. JOURNAL OF FLUIDS ENGINEERING 2013; 135:212021-2120210. [PMID: 23917622 PMCID: PMC3706183 DOI: 10.1115/1.4023450] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/02/2012] [Revised: 12/07/2012] [Indexed: 05/23/2023]
Abstract
Experimental studies employing advanced measurement techniques have played an important role in the advancement of two-phase microfluidic systems. In particular, flow visualization is very helpful in understanding the physics of two-phase phenomenon in microdevices. The objective of this article is to provide a brief but inclusive review of the available methods for studying bubble dynamics in microchannels and to introduce prior studies, which developed these techniques or utilized them for a particular microchannel application. The majority of experimental techniques used for characterizing two-phase flow in microchannels employs high-speed imaging and requires direct optical access to the flow. Such methods include conventional brightfield microscopy, fluorescent microscopy, confocal scanning laser microscopy, and micro particle image velocimetry (micro-PIV). The application of these methods, as well as magnetic resonance imaging (MRI) and some novel techniques employing nonintrusive sensors, to multiphase microfluidic systems is presented in this review.
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Affiliation(s)
| | - Kendra V. Sharp
- Associate Professore-mail: Department of Mechanical Engineering,School of Mechanical, Industrial, and Manufacturing Engineering,Oregon State University,Corvallis, OR 97331
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14
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Observation of the location and form of anthocyanin in purple potato using time-resolved fluorescence. INNOV FOOD SCI EMERG 2012. [DOI: 10.1016/j.ifset.2012.04.008] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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15
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Abstract
The number of applications using optical tomography has significantly increased over the past decade. A literature research providing this term as keyword gives 26 hits for 1990, 719 for 2000, and 9,202 for 2010. With an increasing number of applications, the number of different imaging modalities is also increasing. This review summarizes recent developments in tomographic methods for scattering and nonscattering samples. These two different cases of optical tomography are typically represented by biomedical imaging and atmospheric tomography, representing high- and low-scattering samples, respectively. An essential prerequisite for tomographic analyses is an understanding of light propagation in different media, which allows for the development of specific reconstruction algorithms for the different tomographic tasks.
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Affiliation(s)
- Christoph Haisch
- Institute of Hydrochemistry, Technische Universität München, D-81377 Munich, Germany.
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16
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Guardeño LM, Sanz T, Fiszman SM, Quiles A, Hernando I. Microwave Heating Effect on Rheology and Microstructure of White Sauces. J Food Sci 2011; 76:E544-52. [DOI: 10.1111/j.1750-3841.2011.02339.x] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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17
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Wagner J, Moschakis T, Nelson PV, Wedzicha BL. Development of a novel method to measure the film thickness of cured can coatings. J FOOD ENG 2011. [DOI: 10.1016/j.jfoodeng.2011.03.017] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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18
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Hernández-Carrión M, Guardeño L, Carot J, Pérez-Munuera I, Quiles A, Hernando I. Structural stability of white sauces prepared with different types of fats and thawed in a microwave oven. J FOOD ENG 2011. [DOI: 10.1016/j.jfoodeng.2011.01.017] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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19
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Sozer N, Dogan H, Kokini JL. Textural properties and their correlation to cell structure in porous food materials. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2011; 59:1498-1507. [PMID: 21306105 DOI: 10.1021/jf103766x] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
This paper focuses on understanding the role of structural parameters and starch crystallization on the toughness of cake samples. Accurate mechanical measurements were performed to obtain toughness values, and these were related to structural parameters obtained from image analyses. Three-dimensional skeletons of food samples were generated by using X-ray tomography technique. The structural parameters (cell diameter, cell wall thickness, thickness to radius ratio (t/R), fragmentation index) were obtained after processing of the images with CTan software. The basic hypothesis of the paper is to show that the structural parameter t/R is a determinant for predicting toughness, which is a critical indicator of freshness. Freshness in cakes and other baked products is a leading factor in consumer perception. For this purpose three different cake formulations were stored at 37 and 50 °C. Cycling from these temperatures to lower storage temperatures of 25 and 4 °C was done to accelerate the starch retrogradation rate. Experimental results indicated that there was a strong interrelationship between morphological structure and the mechanical properties with regression coefficients of 0.68 and 0.95. Starch retrogradation, which was followed by X-ray diffractometry, was found to be directly proportional to toughness values, where the percent relative crystallinity increased with storage temperature.
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Affiliation(s)
- Nesli Sozer
- Department of Food Science and Human Nutrition, University of Illinois at Urbana-Champaign , Urbana, Illinois 61801, United States
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20
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Livingston DP, Tuong TD, Gadi SRV, Haigler CH, Gelman RS, Cullen JM. 3D volumes constructed from pixel-based images by digitally clearing plant and animal tissue. J Microsc 2011; 240:122-9. [PMID: 20946378 DOI: 10.1111/j.1365-2818.2010.03393.x] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Construction of three-dimensional volumes from a series of two-dimensional images has been restricted by the limited capacity to decrease the opacity of tissue. The use of commercial software that allows colour-keying and manipulation of two-dimensional images in true three-dimensional space allowed us to construct three-dimensional volumes from pixel-based images of stained plant and animal tissue without generating vector information. We present three-dimensional volumes of (1) the crown of an oat plant showing internal responses to a freezing treatment, (2) a sample of a hepatocellular carcinoma from a woodchuck liver that had been heat-treated with computer-guided radiofrequency ablation to induce necrosis in the central portion of the tumour, and (3) several features of a sample of mouse lung. The technique is well suited to images from large sections (greater than 1 mm) generated from paraffin-embedded tissues. It is widely applicable, having potential to recover three-dimensional information at virtually any resolution inherent in images generated by light microscopy, computer tomography, magnetic resonance imaging or electron microscopy.
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Affiliation(s)
- D P Livingston
- USDA and North Carolina State University, Raleigh, North Carolina 27695, USA.
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Altan A, McCarthy KL, Tikekar R, McCarthy MJ, Nitin N. Image Analysis of Microstructural Changes in Almond Cotyledon as a Result of Processing. J Food Sci 2011; 76:E212-21. [DOI: 10.1111/j.1750-3841.2010.01994.x] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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22
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Application of fluorescent indicators to analyse intracellular calcium and morphology in filamentous fungi. Fungal Biol 2011; 115:326-34. [PMID: 21530914 DOI: 10.1016/j.funbio.2010.12.012] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2009] [Revised: 11/03/2010] [Accepted: 12/21/2010] [Indexed: 12/22/2022]
Abstract
A novel staining and quantification method to investigate changes in intracellular calcium levels [Ca(2+)](i) and morphology in filamentous fungus is presented. Using a simple protocol, two fluorescent dyes, Fluo-4-AM and Cell trace calcein red-orange-AM were loaded into the filamentous fungus Penicillium chrysogenum. The present study investigates the applicability of using Ca(2+)-sensitive dye to quantify and image [Ca(2+)](i) in P. chrysogenum cultures chosen for its potential as an experimental system to study Ca(2+) signalling in elicited cultures. The dye loading was optimised and investigated at different pH loading conditions. It was observed that the fluorophore was taken up throughout the hyphae, retaining cell membrane integrity and no dye compartmentalisation within organelles was observed. From the fluorescent plate-reader studies a significant rise (p<0.001) in the relative fluorescence levels corresponding to [Ca(2+)](i) levels in the hyphae was observed when challenged with an elicitor (mannan oligosaccharide, 150mgL(-1)) which was dependent upon extracellular calcium. Concurrently a novel application of dye-loaded hyphae for morphological analysis was also examined using the imaging software Filament Tracer (Bitplane). Essential quantitative mycelial information including the length and diameter of the segments and number of branch points was obtained using this application based on the three-dimensional data.
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ADEDEJI AKINBODEA, NGADI MICHAELO. MICROSTRUCTURAL CHARACTERIZATION OF DEEP-FAT FRIED BREADED CHICKEN NUGGETS USING X-RAY MICRO-COMPUTED TOMOGRAPHY. J FOOD PROCESS ENG 2010. [DOI: 10.1111/j.1745-4530.2009.00565.x] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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24
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X-ray micro tomography and image analysis as complementary methods for morphological characterization and coating thickness measurement of coated particles. ADV POWDER TECHNOL 2010. [DOI: 10.1016/j.apt.2010.08.002] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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25
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26
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Quantification of microparticle coating quality by confocal laser scanning microscopy (CLSM). Eur J Pharm Biopharm 2009; 73:179-86. [DOI: 10.1016/j.ejpb.2009.04.007] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2008] [Revised: 04/15/2009] [Accepted: 04/20/2009] [Indexed: 11/20/2022]
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27
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