Abstract
Peanut kernels, untreated or soaked in salt solution, were roasted at 160°C for 30 min in a hot air oven or oil roasted at 147°C for 2 min and, stored at 27°C and 5°C up to 150 days. The heat treatments significantly decreased methionine, tryptophan and in vitro protein digestibility (IVPD) and, increased the soluble proteins and acid value of kernel oil. Storage of heated peanuts caused an increase in water-soluble proteins, IVPD, acid value and saponification value and a decrease in methionine, tryptophan and iodine value. The oil roasting was found to be more detrimental to nutritional quality and storage stability of peanuts as compared to dry roasting. The storage of heated peanuts at 5°C was found to be beneficial in lowering the undesirable nutritional changes in the peanut kernels.
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References
Ahmed EM, Pattee HE (1987) Peanut Quality: Its Assurance and Maintenance from the Farm to End-Product. Bull. 874, Agric. Expt. Stn., Institute of Food and Agric. Sci., University of Florida, Gainesville, p. 10
Kabirullah M, Khan MA, Faruque O (1977) Studies on nutritive value and properties of oilseed meals. Bangladesh J Sci Indus Res 12: 192–195
St Angelo AJ, Kuck JC, Ory RL (1979) Role of lipoxygenase and lipid oxidation in quality of oilseeds. J Agric Food Chem 27: 229–234
Balogun TF, Koch BA (1979) Raw and roasted groundnuts as a partial protien and energy source in rations for growing pigs. Trop Agric 15: 135–142.
Khalik JK, Chughtai MID (1983) Chemical composition and nutritional quality of five peanut cultivars grown in Pakistan. Qual Plant Plant Fds Hum Nutr 33: 63–67
Oupadissakoon C, Young CT (1984) Changes in free amino acids and sugars of peanuts during oil roasting. Peanut Sci 11: 6–9
Basha SM, Young CT (1985) Changes in polypeptide composition of peanut seed during oil roasting J Agric Fd Chem 33: 350–354.
Sharma ND, Santha IM, Patil SH, Mehta SL (1985) Fatty acid and amino acid composition of groundnut mutants. Qual Plant Plant Fds Hum Nutr 35: 3–7
AOAC (1975) Offical Methods of Analysis, 12th edn. Washington, DC: Association of Official Analytical Chemists, pp. 15–16
Lowry OW, Rosebrough NJ, Farr AL, Randall RJ (1951) Protein measurement with the Folin phenol reagent. J Biol Chem 193: 262–275
McCarthy TE, Paille MM Sr (1959) A rapid determination of methionine in crude protein. Biochem Biophys Res Commun 1: 29–33
Spice JR Chambers DC (1949) Chemical determination of tryptophan in protein. Analyt Chem 21: 1249
McWatters KH, Cherry JP (1982) Potential food uses of peanut seed proteins. In: Pattee HE, Young CT (eds), Peanut Science and Technology. Yoakum, Texas: Amer. Peanut Res. and Educ. Soc., pp. 689–736.
Narashimhachar BL, Jaganmohan Rao S, Azeemuddin G, Atchyuta Ramayya D, Thirumula Rao SD (1985) Analysis of new varieties of groundnut in Junagadh. Food Sci Technol 22: 430–433
Duplesis LM, Twisk PV, Nieker K, Steyn M (1981) Evaluation of peanut and cotton seed oil for deep frying. J Amer Oil Chem Soc 58: 575
How JSL, Young CT (1986) Effect of storage on the chemical composition and quality of packed roasted peanuts. Proc Amer Peanut Res Edn Soc Inc 18: 36
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Damame, S.V., Chavan, J.K. & Kadam, S.S. Effects of roasting and storage on proteins and oil in peanut kernels. Plant Food Hum Nutr 40, 143–148 (1990). https://doi.org/10.1007/BF02193772
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DOI: https://doi.org/10.1007/BF02193772