101
|
Thirumdas R, Trimukhe A, Deshmukh R, Annapure U. Functional and rheological properties of cold plasma treated rice starch. Carbohydr Polym 2017; 157:1723-1731. [DOI: 10.1016/j.carbpol.2016.11.050] [Citation(s) in RCA: 98] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2016] [Revised: 11/17/2016] [Accepted: 11/18/2016] [Indexed: 02/07/2023]
|
102
|
Effect of heat-moisture treatment under mildly acidic condition on fragmentation of waxy maize starch granules into nanoparticles. Food Hydrocoll 2017. [DOI: 10.1016/j.foodhyd.2016.08.018] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
|
103
|
Thirumdas R, Kadam D, Annapure US. Cold Plasma: an Alternative Technology for the Starch Modification. FOOD BIOPHYS 2017. [DOI: 10.1007/s11483-017-9468-5] [Citation(s) in RCA: 71] [Impact Index Per Article: 10.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
|
104
|
|
105
|
Li C, Liu W, Gu Z, Fang D, Hong Y, Cheng L, Li Z. Ultrasonic pretreatment improves the high-temperature liquefaction of corn starch at high concentrations. STARCH-STARKE 2016. [DOI: 10.1002/star.201600002] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Caiming Li
- State Key Laboratory of Food Science and Technology; Jiangnan University; Wuxi Jiangsu P.R. China
- School of Food Science and Technology; Jiangnan University; Wuxi Jiangsu P.R. China
| | - Wenjing Liu
- School of Food Science and Technology; Jiangnan University; Wuxi Jiangsu P.R. China
| | - Zhengbiao Gu
- State Key Laboratory of Food Science and Technology; Jiangnan University; Wuxi Jiangsu P.R. China
- School of Food Science and Technology; Jiangnan University; Wuxi Jiangsu P.R. China
- Collaborative Innovation Center for Food safety and quality control; Jiangnan University; Wuxi Jiangsu P.R. China
| | - Dan Fang
- School of Food Science and Technology; Jiangnan University; Wuxi Jiangsu P.R. China
| | - Yan Hong
- State Key Laboratory of Food Science and Technology; Jiangnan University; Wuxi Jiangsu P.R. China
- School of Food Science and Technology; Jiangnan University; Wuxi Jiangsu P.R. China
- Collaborative Innovation Center for Food safety and quality control; Jiangnan University; Wuxi Jiangsu P.R. China
| | - Li Cheng
- State Key Laboratory of Food Science and Technology; Jiangnan University; Wuxi Jiangsu P.R. China
- School of Food Science and Technology; Jiangnan University; Wuxi Jiangsu P.R. China
| | - Zhaofeng Li
- State Key Laboratory of Food Science and Technology; Jiangnan University; Wuxi Jiangsu P.R. China
- School of Food Science and Technology; Jiangnan University; Wuxi Jiangsu P.R. China
- Collaborative Innovation Center for Food safety and quality control; Jiangnan University; Wuxi Jiangsu P.R. China
| |
Collapse
|
106
|
Bashir K, Aggarwal M. Effects of gamma irradiation on the physicochemical, thermal and functional properties of chickpea flour. Lebensm Wiss Technol 2016. [DOI: 10.1016/j.lwt.2016.02.022] [Citation(s) in RCA: 48] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
|
107
|
Carmona-García R, Bello-Pérez LA, Aguirre-Cruz A, Aparicio-Saguilán A, Hernández-Torres J, Alvarez-Ramirez J. Effect of ultrasonic treatment on the morphological, physicochemical, functional, and rheological properties of starches with different granule size. STARCH-STARKE 2016. [DOI: 10.1002/star.201600019] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
| | | | - A. Aguirre-Cruz
- Instituto de Biotecnología; Universidad del Papaloapan; Tuxtepec Oaxaca Mexico
| | | | - J. Hernández-Torres
- Centro de Investigación en Micro y Nanotecnología; Universidad Veracruzana, Boca del Río; Veracruz Mexico
| | - J. Alvarez-Ramirez
- Departamento de Ingeniería de Procesos e Hidráulica; Universidad Autónoma Metropolitana-Iztapalapa; Iztapalapa Mexico
| |
Collapse
|
108
|
Quality controlling of brown rice by ultrasound treatment and its effect on isolated starch. Carbohydr Polym 2016; 137:30-38. [DOI: 10.1016/j.carbpol.2015.10.045] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2015] [Revised: 10/09/2015] [Accepted: 10/12/2015] [Indexed: 11/15/2022]
|
109
|
Radosta S, Kiessler B, Vorwerg W, Brenner T. Molecular composition of surface sizing starch prepared using oxidation, enzymatic hydrolysis and ultrasonic treatment methods. STARCH-STARKE 2016. [DOI: 10.1002/star.201500314] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Sylvia Radosta
- Fraunhofer Institute for Applied Polymer Research; Potsdam Germany
| | | | - Waltraud Vorwerg
- Fraunhofer Institute for Applied Polymer Research; Potsdam Germany
| | | |
Collapse
|
110
|
You SY, Oh SG, Han HM, Jun W, Hong YS, Chung HJ. Impact of germination on the structures and in vitro digestibility of starch from waxy brown rice. Int J Biol Macromol 2016; 82:863-70. [DOI: 10.1016/j.ijbiomac.2015.11.023] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2015] [Revised: 10/27/2015] [Accepted: 11/08/2015] [Indexed: 10/22/2022]
|
111
|
Viscosity and hydrodynamic radius relationship of high-power ultrasound depolymerised starch pastes with different amylose content. Food Hydrocoll 2016. [DOI: 10.1016/j.foodhyd.2015.06.017] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
112
|
Majzoobi M, Hedayati S, Farahnaky A. Functional properties of microporous wheat starch produced by α-amylase and sonication. FOOD BIOSCI 2015. [DOI: 10.1016/j.fbio.2015.05.001] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
|
113
|
Ashokkumar M. Applications of ultrasound in food and bioprocessing. ULTRASONICS SONOCHEMISTRY 2015; 25:17-23. [PMID: 25219872 DOI: 10.1016/j.ultsonch.2014.08.012] [Citation(s) in RCA: 105] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/05/2014] [Accepted: 08/13/2014] [Indexed: 05/08/2023]
Abstract
Improving the quality and nutritional aspects of food is one of the key issues for healthy life of human beings. The stability during storage is an important parameter in quality assurance of food products. Various processing techniques such as high pressure, thermal, pulsed electric field and microwave have been used to prolong the shelf-life of food products. In recent years, ultrasound technology has been found to be a potential food processing technique. The passage of ultrasound in a liquid matrix generates mechanical agitation and other physical effects due to acoustic cavitation. Owing to its importance, a number of review articles and book chapters on the applications of ultrasound in food processing have been published in recent years. This article provides an overview of recent developments in ultrasonic processing of food and dairy systems with a particular focus on functionality of food and dairy ingredients. More specifically, the use of high frequency ultrasound in fat separation from milk and viscosity modification in starch systems and the use of low frequency ultrasound in generating nutritional food emulsions, viscosity modification and encapsulation of nutrients have been highlighted. The issues associated with the development of large scale ultrasonic food processing equipment have also been briefly discussed.
Collapse
Affiliation(s)
- Muthupandian Ashokkumar
- School of Chemistry, University of Melbourne, VIC 3010, Australia; Chemistry Department, King Abdulaziz University, Jeddah, Saudi Arabia.
| |
Collapse
|
114
|
Shi L, Cheng F, Zhu P, Lin Y. Physicochemical changes of maize starch treated by ball milling with limited water content. STARCH-STARKE 2015. [DOI: 10.1002/star.201500026] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Lei Shi
- Textile InstituteSichuan UniversityChengduP.R. China
| | - Fei Cheng
- Textile InstituteSichuan UniversityChengduP.R. China
| | - Pu‐Xin Zhu
- Textile InstituteSichuan UniversityChengduP.R. China
| | - Yi Lin
- Textile InstituteSichuan UniversityChengduP.R. China
| |
Collapse
|
115
|
Wani AA, Wani IA, Hussain PR, Gani A, Wani TA, Masoodi FA. Physicochemical properties of native and γ-irradiated wild arrowhead (Sagittaria sagittifolia L.) tuber starch. Int J Biol Macromol 2015; 77:360-8. [DOI: 10.1016/j.ijbiomac.2015.03.012] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2014] [Revised: 02/16/2015] [Accepted: 03/07/2015] [Indexed: 11/17/2022]
|
116
|
Mohammad Amini A, Razavi SMA. Ultrasound-assisted acid-thinning of corn starch: Morphological, physicochemical, and rheological properties. STARCH-STARKE 2015. [DOI: 10.1002/star.201400228] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Asad Mohammad Amini
- Department of Food Science and Technology; Food Hydrocolloids Research Centre; Ferdowsi University of Mashhad (FUM); Mashhad Iran
| | - Seyed Mohammad Ali Razavi
- Department of Food Science and Technology; Food Hydrocolloids Research Centre; Ferdowsi University of Mashhad (FUM); Mashhad Iran
| |
Collapse
|
117
|
Morphological, physicochemical, and viscoelastic properties of sonicated corn starch. Carbohydr Polym 2015; 122:282-92. [DOI: 10.1016/j.carbpol.2015.01.020] [Citation(s) in RCA: 81] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2013] [Revised: 12/31/2014] [Accepted: 01/02/2015] [Indexed: 11/21/2022]
|
118
|
Impact of ultrasound on structure, physicochemical properties, modifications, and applications of starch. Trends Food Sci Technol 2015. [DOI: 10.1016/j.tifs.2014.12.008] [Citation(s) in RCA: 147] [Impact Index Per Article: 16.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
|
119
|
Affiliation(s)
- James N. BeMiller
- Department of Food Science, Purdue University, West Lafayette, Indiana 47906-2009;
| | - Kerry C. Huber
- Department of Animal and Food Science, Brigham Young University–Idaho, Rexburg, Idaho 83460-4540;
| |
Collapse
|
120
|
Majzoobi M, Seifzadeh N, Farahnaky A, Mesbahi G. Effects of Sonication on Physical Properties of Native and Cross-Linked Wheat Starches. J Texture Stud 2015. [DOI: 10.1111/jtxs.12119] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Affiliation(s)
- Mahsa Majzoobi
- Department of Food Science and Technology; School of Agriculture; Shiraz University; Shiraz 7144165186 Iran
| | - Negin Seifzadeh
- Department of Food Science and Technology; School of Agriculture; Shiraz University; Shiraz 7144165186 Iran
| | - Asgar Farahnaky
- Department of Food Science and Technology; School of Agriculture; Shiraz University; Shiraz 7144165186 Iran
- School of Biomedical Sciences, Graham Centre for Agricultural Innovation and Functional Grain Centre; Charles Sturt University; Wagga Wagga New South Wales Australia
| | - Gholamreza Mesbahi
- Department of Food Science and Technology; School of Agriculture; Shiraz University; Shiraz 7144165186 Iran
| |
Collapse
|
121
|
Sit N, Deka SC, Misra S. Combined effect of ultrasound and enzymatic pretreatment on yield and functional properties of taro (Colocasia esculenta) starch. STARCH-STARKE 2014. [DOI: 10.1002/star.201400085] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Nandan Sit
- Department of Food Engineering and Technology; Tezpur University; Tezpur Assam India
| | - Sankar Chandra Deka
- Department of Food Engineering and Technology; Tezpur University; Tezpur Assam India
| | - Sudip Misra
- Department of Food Engineering and Technology; Tezpur University; Tezpur Assam India
| |
Collapse
|
122
|
Effect of gamma irradiation on physicochemical properties of Indian Horse Chestnut (Aesculus indica Colebr.) starch. Food Hydrocoll 2014. [DOI: 10.1016/j.foodhyd.2013.06.002] [Citation(s) in RCA: 111] [Impact Index Per Article: 11.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
|
123
|
Shi M, Lu W, Yu S, Ward R, Gao Q. Effect of acid-ethanol treatment on physicochemical properties and in vitro digestibility of maize starches varying in AM content. STARCH-STARKE 2013. [DOI: 10.1002/star.201300118] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Miaomiao Shi
- College of Light Industry and Food Sciences; South China University of Technology; Guangzhou P. R. China
| | - Weiqin Lu
- College of Light Industry and Food Sciences; South China University of Technology; Guangzhou P. R. China
| | - Shujuan Yu
- College of Light Industry and Food Sciences; South China University of Technology; Guangzhou P. R. China
| | - Rachelle Ward
- Industry and Investment NSW; Yanco Agricultural Institute; Yanco NSW Australia
| | - Qunyu Gao
- College of Light Industry and Food Sciences; South China University of Technology; Guangzhou P. R. China
| |
Collapse
|
124
|
Yu S, Zhang Y, Ge Y, Zhang Y, Sun T, Jiao Y, Zheng XQ. Effects of Ultrasound Processing on the Thermal and Retrogradation Properties of Nonwaxy Rice Starch. J FOOD PROCESS ENG 2013. [DOI: 10.1111/jfpe.12048] [Citation(s) in RCA: 50] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Shifeng Yu
- Key Laboratory of Processing Agricultural Products of Heilongjiang Province; College of Food and Bioengineering; Qiqihar University; Qiqihar 161006 China
| | - Yongchun Zhang
- Key Laboratory of Processing Agricultural Products of Heilongjiang Province; College of Food and Bioengineering; Qiqihar University; Qiqihar 161006 China
| | - Yin Ge
- Key Laboratory of Processing Agricultural Products of Heilongjiang Province; College of Food and Bioengineering; Qiqihar University; Qiqihar 161006 China
| | - Ying Zhang
- Key Laboratory of Processing Agricultural Products of Heilongjiang Province; College of Food and Bioengineering; Qiqihar University; Qiqihar 161006 China
| | - Tianying Sun
- Key Laboratory of Processing Agricultural Products of Heilongjiang Province; College of Food and Bioengineering; Qiqihar University; Qiqihar 161006 China
| | - Yan Jiao
- Key Laboratory of Processing Agricultural Products of Heilongjiang Province; College of Food and Bioengineering; Qiqihar University; Qiqihar 161006 China
| | - Xi-Qun Zheng
- Key Laboratory of Processing Agricultural Products of Heilongjiang Province; College of Food and Bioengineering; Qiqihar University; Qiqihar 161006 China
| |
Collapse
|
125
|
|
126
|
|
127
|
Starch nanoparticles formation via high power ultrasonication. Carbohydr Polym 2013; 92:1625-32. [DOI: 10.1016/j.carbpol.2012.11.022] [Citation(s) in RCA: 174] [Impact Index Per Article: 15.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2012] [Revised: 10/22/2012] [Accepted: 11/01/2012] [Indexed: 11/21/2022]
|
128
|
Starchevsky V, Kislenko V, Ivanyshyn S. Starch Dispersion in Water under Ultrasonic Treatment. CHEMISTRY & CHEMICAL TECHNOLOGY 2012. [DOI: 10.23939/chcht06.02.183] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
|
129
|
Zuo YYJ, Hébraud P, Hemar Y, Ashokkumar M. Quantification of high-power ultrasound induced damage on potato starch granules using light microscopy. ULTRASONICS SONOCHEMISTRY 2012; 19:421-6. [PMID: 21962479 DOI: 10.1016/j.ultsonch.2011.08.006] [Citation(s) in RCA: 56] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/05/2011] [Revised: 08/10/2011] [Accepted: 08/19/2011] [Indexed: 05/23/2023]
Abstract
A simple light microscopic technique was developed in order to quantify the damage inflicted by high-power low-frequency ultrasound (0-160 W, 20 kHz) treatment on potato starch granules in aqueous dispersions. The surface properties of the starch granules were modified using ethanol and SDS washing methods, which are known to displace proteins and lipids from the surface of the starch granules. The study showed that in the case of normal and ethanol-washed potato starch dispersions, two linear regions were observed. The number of defects first increased linearly with an increase in ultrasound power up to a threshold level. This was then followed by another linear dependence of the number of defects on the ultrasound power. The power threshold where the change-over occurred was higher for the ethanol-washed potato dispersions compared to non-washed potato dispersions. In the case of SDS-washed potato starch, although the increase in defects was linear with the ultrasound power, the power threshold for a second linear region was not observed. These results are discussed in terms of the different possible mechanisms of cavitation induced-damage (hydrodynamic shear stresses and micro-jetting) and by taking into account the hydrophobicity of the starch granule surface.
Collapse
Affiliation(s)
- Yue Yue J Zuo
- School of Chemistry, The University of Melbourne, Melbourne, Vic 3010, Australia
| | | | | | | |
Collapse
|
130
|
Jiang Q, Xu X, Jin Z, Tian Y, Hu X, Bai Y. Physico-chemical properties of rice starch gels: Effect of different heat treatments. J FOOD ENG 2011. [DOI: 10.1016/j.jfoodeng.2011.07.006] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
|
131
|
Benmoussa M, Hamaker BR. Rapid small-scale starch isolation using a combination of ultrasonic sonication and sucrose density separation. STARCH-STARKE 2011. [DOI: 10.1002/star.201000083] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
|
132
|
Chen Y, Huang S, Tang Z, Chen X, Zhang Z. Structural changes of cassava starch granules hydrolyzed by a mixture of α-amylase and glucoamylase. Carbohydr Polym 2011. [DOI: 10.1016/j.carbpol.2011.01.047] [Citation(s) in RCA: 62] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
|
133
|
Luo ZG, Fu X, Gao QY, Yu SJ. Effect of acid hydrolysis in the presence of anhydrous alcohols on the structure, thermal and pasting properties of normal, waxy and high-amylose maize starches. Int J Food Sci Technol 2011. [DOI: 10.1111/j.1365-2621.2010.02509.x] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
|
134
|
Zhang Y, Gu Z, Hong Y, Li Z, Cheng L. Pasting and rheologic properties of potato starch and maize starch mixtures. STARCH-STARKE 2010. [DOI: 10.1002/star.200900255] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
|
135
|
Wong SS, Ngiam ZRJ, Kasapis S, Huang D. Novel sulfation of curdlan assisted by ultrasonication. Int J Biol Macromol 2010; 46:385-8. [DOI: 10.1016/j.ijbiomac.2009.12.011] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2009] [Revised: 12/17/2009] [Accepted: 12/23/2009] [Indexed: 11/15/2022]
|
136
|
Lima FF, Andrade CT. Effect of melt-processing and ultrasonic treatment on physical properties of high-amylose maize starch. ULTRASONICS SONOCHEMISTRY 2010; 17:637-641. [PMID: 20133177 DOI: 10.1016/j.ultsonch.2010.01.001] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/18/2009] [Revised: 11/29/2009] [Accepted: 01/03/2010] [Indexed: 05/28/2023]
Abstract
High-amylose maize starch (Hylon VII) was submitted to melt-processing in an internal mixer at 100 degrees C and 40 rpm for 8 min. Glycerol was used as a plasticiser at different polymer/glycerol ratios. Torque and temperature curves were obtained. After glycerol extraction with ethyl alcohol, the samples were dispersed at 5 g/L, and treated by ultrasound radiation at the same conditions for 30 min. Samples were characterised by (1)H NMR spectrometry, viscosity measurements, and X-ray diffractometry. The results revealed that both glycerol and water had an important role on the crystallinity properties of the resulting products. Melt-processed and sonicated samples showed similar (1)H NMR spectra. Ultrasound treatment caused a significant reduction in intrinsic viscosity for the sample previously processed with the highest glycerol content, probably because of its higher solubility in water.
Collapse
Affiliation(s)
- Felipe F Lima
- Universidade Federal do Rio de Janeiro, Instituto de Macromoléculas Professora Eloisa Mano, Centro de Tecnologia, Bloco J, PO Box 68525, 21945-970 Rio de Janeiro, Brazil
| | | |
Collapse
|
137
|
|