Characterization of irradiated starches by using FT-Raman and FTIR spectroscopy.

Fourier transform infrared (FTIR) and Fourier transform Raman (FT-Raman) methods were used for rapid characterization and classification of selected irradiated starch samples. Biochemical changes due to irradiation were detected using the two vibrational spectroscopic techniques, and canonical variate analysis (CVA) was applied to the spectral data for discriminating starch samples based on the extent of irradiation. The O-H (3000-3600 cm(-1)) stretch, C-H (2800-3000 cm(-1)) stretch, the skeletal mode vibration of the glycosidic linkage (900-950 cm(-1)) in both Raman and infrared spectra, and the infrared band of water adsorbed in the amorphous parts of starches (1550-1750 cm(-1)) were employed in classification analysis of irradiated starches. Spectral data related to water adsorbed in the noncrystalline regions of starches provided a better classification of irradiated starches with 5 partial least-squares (PLS) factors in the multivariate model.

[1]  C. Scotter,et al.  The potential of diffuse reflectance FTIR spectroscopy in the examination of small chemical changes in polyethylene and dry foods , 1995 .

[2]  P. Belton.  New methods for monitoring changes in proteins , 1993 .

[3]  J. Koenig,et al.  Infrared and raman spectroscopy of carbohydrates , 1971 .

[4]  J. Raffi,et al.  Gamma Radiolysis of Starches Derived from Different Foodstuffs. Part IV. Study of Radiodepolymerization , 1981 .

[5]  H Corke,et al.  Determination of the degree of succinylation in diverse modified starches by raman spectroscopy. , 2000, Journal of agricultural and food chemistry.

[6]  H. Corke,et al.  General Application of Raman Spectroscopy for the Determination of Level of Acetylation in Modified Starches , 1999 .

[7]  E. Li-Chan,et al.  The applications of Raman spectroscopy in food science , 1996 .

[8]  J. Diehl.  Safety of Irradiated Foods , 1990 .

[9]  S. Glidewell,et al.  Detection of irradiated food: A review , 1993 .

[10]  Henry Delincée,et al.  Detection of food treated with ionizing radiation , 1998 .

[11]  B. Bulkin,et al.  Retrogradation kinetics of waxy-corn and potato starches; a rapid, Raman-spectroscopic study , 1987 .

[12]  C. Oates.  Towards an understanding of starch granule structure and hydrolysis , 1997 .

[13]  J. Huvenne,et al.  Investigation of the glycosidic linkages in several oligosaccharides using FT-IR and FT Raman spectroscopies , 1995 .

[14]  B. Osborne,et al.  Comparison of fourier transform mid infrared spectroscopy and near infrared reflectance spectroscopy with differential scanning calorimetry for the study of the staling of bread , 1991 .

[15]  C. Sonntag.  Free-Radical Reactions of Carbohydrates as Studied by Radiation Techniques , 1980 .

[16]  H. Zobel,et al.  Molecules to Granules: A Comprehensive Starch Review , 1988 .

[17]  B. Lendl,et al.  On-line FT-Raman spectroscopic monitoring of starch gelatinisation and enzyme catalysed starch hydrolysis , 2000 .

[18]  F. Milanovich,et al.  Laser-Raman spectroscopic study of cyclohexaamylose and related compounds: spectral analysis and structural implications , 1979 .

[19]  J. Remon,et al.  Characterisation and disintegration properties of irradiated starch. , 2001, International journal of pharmaceutics.

[20]  Jack L. Koenig,et al.  Infrared and raman spectroscopy of carbohydrates : Part I: Identification of OH and CH-related vibrational modes for D-glucose, maltose, cellobiose, and dextran by deuterium-substitution methods , 1971 .

[21]  D. Henneberg,et al.  Radiation Chemistry of Carbohydrates, VI: γ-Radiolysis of Glucose in Deoxygenated N2O Saturated Aqueous Solution , 1975 .

[22]  J. Koenig,et al.  Infrared and Raman spectroscopy of carbohydrates. Part VI: Normal coordinate analysis of V‐amylose , 1975 .

[23]  K. Cieśla,et al.  Detection of Starch Transformation Under γ‐Irradiation by Small‐angle X‐Ray Scattering , 1991 .

[24]  C. K. Chong,et al.  Development of NMR and raman spectroscopic methods for the determination of the degree of substitution of maleate in modified starches. , 2001, Journal of agricultural and food chemistry.

[25]  Nathalie Dupuy,et al.  Identification of Modified Starches Using Infrared Spectroscopy and Artificial Neural Network Processing , 1998 .

[26]  C. Sonntag,et al.  The chemical basis of radiation biology , 1987 .

[27]  M. Hanna,et al.  Properties of Irradiated Starches , 1993 .

[28]  Jack L. Koenig,et al.  Infrared and raman spectroscopy of carbohydrates. : Part II: Normal coordinate analysis of α-D-glucose. , 1972 .

[29]  E. Janzen,et al.  Identification of irradiated foodstuffs: a review of the recent literature , 1997 .

[30]  N. Tamura,et al.  Change in Digestibility of Raw Starch by Gamma‐Irradiation , 1987 .

[31]  P. Angelini,et al.  Effect of radiation parameters on the formation of radiolysis products in meat and meat substances. , 1978, Journal of agricultural and food chemistry.

[32]  L. Macarthur.  Gamma radiation of wheat. II. Effects of low-dosage radiations on starch properties. , 1984 .

[33]  S. N. Moorthy,et al.  Raman and infrared spectra of starch samples of sweet potato and cassava , 1990 .