Although many consumers know that pulses are nutritious, long preparation times are frequently a barrier to consumption of lentils, dried peas and chickpeas. Therefore, a product has been developed which can be used as an ingredient in a wide variety of dishes without presoaking or precooking. Dried green peas, chickpeas or lentils were soaked, cooked, homogenized and spray-dried. Proximate analyses were conducted on the pulse powders and compared to an instant mashed potato product. Because the health benefits of pulses may be due in part to their carbohydrate content, a detailed carbohydrate analysis was carried out on the pulse powders. Pulse powders were higher in protein and total dietary fibre and lower in starch than potato flakes. After processing, the pulse powders maintained appreciable amounts of resistant starch (4.4%–5.2%). Total dietary fibre was higher in chickpeas and peas (26.2% and 27.1% respectively) than lentils (21.9%), whereas lentils had the highest protein content (22.7%). Pulse carbohydrates were rich in glucose, arabinose, galactose and uronic acids. Stachyose, a fermentable fibre, was the most abundant oligosaccharide, making up 1.5%–2.4% of the dried pulse powders. Spray-drying of cooked, homogenized pulses produces an easy to use ingredient with strong nutritional profile.
References
[1]
Leterme, P. Recommendations by health organizations for pulse consumption. Br. J. Nutr. 2002, 88, S239–S242, doi:10.1079/BJN2002712.
[2]
Tharanathan, R.N.; Mahadevamma, S. Grain legumes—A boon to human nutrition. Trends Food Sci. Technol. 2003, 14, 507–518, doi:10.1016/j.tifs.2003.07.002.
[3]
Chibbar, R.N.; Ambigaipalan, P.; Hoover, R. Molecular diversity in pulse seed starch and complex carbohydrates and its role in human nutrition and health. Cereal Chem. 2010, 87, 342–352, doi:10.1094/CCHEM-87-4-0342.
[4]
Rizkalla, S.W.; Bellisle, F.; Slama, G. Health benefits of low glycaemic index foods, such as pulses, in diabetic patients and healthy individuals. Br. J. Nutr. 2002, 88, S255–S262, doi:10.1079/BJN2002715.
[5]
Health Canada. Eating Well with Canada’s Food Guide. Available online: http://www.hc-sc.gc.ca/fn-an/food-guide-aliment/index-eng.php (accessed on 14 March 2013).
[6]
United States Department of Agriculture (USDA). Beans and Peas Are Unique Foods. Available online: http://www.choosemyplate.gov/food-groups/vegetables-beans-peas.html (accessed on 14 March 2013).
[7]
AOAC International. Official Methods of Analysis. Available online: http://www.eoma.aoac.org/ (accessed on 9 July 2013).
[8]
Bainy, E.M.; Tosh, S.M.; Corredig, M.; Poysa, V.; Woodrow, L. Varietal differences of carbohydrates in defatted soybean flour and soy protein isolate by-products. Carbohydr. Polym. 2008, 72, 664–672, doi:10.1016/j.carbpol.2007.10.008.
[9]
Brummer, Y.; Jones, S.; Tosh, S.M.; Wood, P.J. Extraction and physicochemical characterisation of rye β-glucan and effects of barium on polysaccharide molecular weight. Cereal Chem. 2008, 85, 174–181, doi:10.1094/CCHEM-85-2-0174.
Neter, J; Wasserman, W; Kutner, M.H. Applied Linear Statistical Models, 3rd ed. ed.; Irwin: Homewood, IL, USA, 1990; pp. 741–771.
[12]
Dalgetty, D.D.; Baik, B.-K. Isolation and characterization of cotyledon fibers from peas, lentils, and chickpeas. Cereal Chem. 2003, 80, 310–315, doi:10.1094/CCHEM.2003.80.3.310.
[13]
Han, I.H.; Baik, B.K. Oligosaccharide content and composition of legumes and their reduction by soaking, cooking, ultrasound, and high hydrostatic pressure. Cereal Chem. 2006, 83, 428–433, doi:10.1094/CC-83-0428.
[14]
Ma, Z.; Boye, J.I.; Simpson, B.K.; Shiv, O.; Prasher, S.O.; Monpetit, D.; Malcolmson, L. Thermal processing effects on the functional properties and microstructure of lentil, chickpea, and pea flours. Food Res. Int. 2011, 44, 2534–2544, doi:10.1016/j.foodres.2010.12.017.
[15]
Guillon, F.; Champ, M.M.-J. Carbohydrate fractions of legumes: Uses in human nutrition and potential for health. Br. J. Nutr. 2002, 88, S293–S306, doi:10.1079/BJN2002720.
[16]
Campos-Vega, R.; Raynoso-Camacho, R.; Pedraza-Aboytes, G.; Acosta-Gallegos, J.A.; Guzman-Maldonado, S.H.; Paredes-Lopez, O.; Oomah, B.D.; Loarca-Pina, G. Chemical composition and in vitro polysaccharide fermentation of different beans (Phaseolus vulgaris L.). J. Food Sci. 2009, 74, T59–T65, doi:10.1111/j.1750-3841.2009.01292.x.
[17]
Veenstra, J.M.; Cryne, C.N.; Deschambault, B.R.; Boye, J.I.; Benali, M.; Marcotte, M.; Tosh, S.M.; Farnworth, E.R.; Duncan, A.M.; Wright, A.J. Effect of pulse consumption on perceived flatulence and gastrointestinal function in healthy males. Food Res. Int. 2010, 43, 553–559, doi:10.1016/j.foodres.2009.07.029.
[18]
Farnworth, E.R.; Duncan, A.M.; Wright, A.J.; Boye, J.; Tosh, S.M.; Marcotte, M.; Benali, M.; Cryne, C.N.; Deschambault, B.R.; Veenstra, J.M.; et al. The effects of pulse consumption on fecal composition, fecal bacteria and fecal enzyme activities in healthy young men. 2011. unpublished work.
[19]
Abeysekara, S.; Chilibeck, P.D.; Vatanparast, H.; Zello, G.A. A pulse-based diet is effective for reducing total and LDL-cholesterol in older adults. Br. J. Nutr. 2012, 108, S103–S110, doi:10.1017/S0007114512000748.
[20]
Cryne, C.N.; Veenstra, J.M.; Deschambault, B.R.; Benali, M.; Marcotte, M.; Boye, J.I.; Tosh, S.M.; Farnworth, E.R.; Wright, A.J.; Duncan, A.M. Spray-dried pulse consumption does not affect cardiovascular disease risk or glycemic control in healthy males. Food Res. Int. 2012, 48, 131–139, doi:10.1016/j.foodres.2012.02.018.
[21]
Winham, D.M.; Hutchins, A.M.; Melde, C.L. Pinto bean, navy bean, and black-eye pea consumption do not significantly lower the glycemic response to a high glycemic index treatment in normoglycemic adults. Nutr. Res. 2007, 27, 535–541, doi:10.1016/j.nutres.2007.07.002.
[22]
Thompson, S.V.; Winham, D.M.; Hutchins, A.M. Black bean and chickpea consumption reduce glycemic response as part of a rice meal. FASEB J. 2009, 23, 540–542.
[23]
Thompson, S.V.; Winham, D.M.; Hutchins, A.M. Bean and rice meals reduce postprandial glycemic response in adults with type 2 diabetes: A cross-over study. Nutr. J. 2012, 11, 23, doi:10.1186/1475-2891-11-23.
[24]
Hutchins, A.M.; Winham, D.M.; Thompson, S.V. Phaseolus beans: Impact on glycaemic response and chronic disease risk in human subjects. Br. J. Nutr. 2012, 108, S52–S65, doi:10.1017/S0007114512000761.
