Development of impact acoustic detection and density separations methods for production of high quality processed beans

Abstract Impact acoustic detection (IAD) and density separation (DS) techniques were used to process and study the acoustic and physical properties of dry beans. The IAD’s data analysis software consisted of real time Fast Fourier Transform (FFT) function and the integral against frequency 0–20 kHz was called signal level (SL). Solutions of calcium nitrate and water were used for DS. Bean with low SL (LSL: SL ⩽ 0.04) had higher percentage of skin damage and vice versa. Beans with high SL (HSL: SL > 0.04) were larger sized than those with LSL. Beans with low density had more skin damage than beans with high density. The quantity of broken dehydrated precooked pinto beans in LSL fraction was four times more than in HSL fraction. The percentages of burst and split beans in LSL fraction were higher than in HSL fraction. Higher solid losses and hydration ratio were associated with low density. Contrary to conventional methods, IAD could separate beans based on skin damage. Both techniques could improve high quality processing of dehydrated precooked beans.

[1]  Tom C. Pearson.  Detection of pistachio nuts with closed-shells using impact acoustics. , 2000 .

[2]  Clifford J Studman,et al.  The Acoustic Impulse Response Method for Measuring the Overall Firmness of Fruit , 1997 .

[3]  T. García-Gasca,et al.  The effects of a protease inhibitor fraction from tepary bean (Phaseolus acutifolius) on in vitro cell proliferation and cell adhesion of transformed cells. , 2002, Toxicology in vitro : an international journal published in association with BIBRA.

[4]  J. Anderson,et al.  Hypocholesterolemic effects of oat-bran or bean intake for hypercholesterolemic men. , 1984, The American journal of clinical nutrition.

[5]  Niels O. Maness,et al.  PEACH FIRMNESS PREDICTION BY MULTIPLE LOCATION IMPULSE TESTING , 1998 .

[6]  Barbara Hubbard,et al.  The World According to Wavelets , 1996 .

[7]  J. Anderson,et al.  Nutrition and health implications of dry beans: a review. , 1994, Journal of the American College of Nutrition.

[8]  A. Enis Çetin,et al.  Classification of closed and open shell pistachio nuts using principal component analysis of impact acoustics , 2004, 2004 IEEE International Conference on Acoustics, Speech, and Signal Processing.

[9]  B. Luh,et al.  Chemical and Physical Characteristics of Ready-To-Eat Dry Beans , 1985 .

[10]  N. Abu-Ghannam,et al.  Hydration Kinetics of Red Kidney Beans (Phaseolus vulgaris L.) , 1997 .

[11]  D. Salvadori,et al.  Black bean (Phaseolus vulgaris L.) as a protective agent against DNA damage in mice. , 2003, Food and chemical toxicology : an international journal published for the British Industrial Biological Research Association.

[12]  J. Anderson,et al.  Hypocholesterolemic effects of oat and bean products. , 1988, The American journal of clinical nutrition.

[13]  Kenta Mikuriya,et al.  Melon ripeness monitoring by a portable firmness tester , 1998 .

[14]  R. Coulombe,et al.  Effects of dietary butylated hydroxytoluene on aflatoxin B1-relevant metabolic enzymes in turkeys. , 2003, Food and chemical toxicology : an international journal published for the British Industrial Biological Research Association.

[15]  Shree P. Singh.  Production and Utilization , 1999 .

[16]  A. H. Tewfik,et al.  CLASSIFICATION OF CLOSED- AND OPEN-SHELL PISTACHIO NUTS USING VOICE-RECOGNITION TECHNOLOGY , 2004 .

[17]  K. Chang,et al.  Dehydrated Precooked Pinto Bean Quality as Affected by Cultivar and Coating Biopolymers , 1995 .

[18]  F. L. Younce,et al.  A Dynamic Sensor for Cherry Firmness , 1995 .

[19]  Shree P. Singh.  Common Bean Improvement in the Twenty-First Century , 1999, Developments in Plant Breeding.