Chemical composition and antioxidant activity of commercial flours from Ceratonia siliqua and Prosopis spp.
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Ceratonia siliqua and some species of Prosopis (Fabaceae family) are commonly known as carob trees. The flours obtained from their pods are used in the food industry, as cocoa substitute in the confectionery and also used in beverages and mixed with products derived from cereals. The aim of this study was to compare and characterize the physical and chemical properties, specially the antioxidant activities, of the two commercial carob flours. Commercial Prosopis spp. (mainly from P. alba) flour exhibited high content of protein, starch and fat, while commercial flour from C. siliqua had a lower content of these compounds, but higher antioxidant activity. By nuclear magnetic resonance (NMR) the aqueous extracts of the two carob flours were analysed and concluded that they had similar content of sucrose, but C. siliqua had more monosaccharides and pinitol. This important cyclitol has beneficial physiological effects, improving the glycaemic level and, thus, having a great potential in the food industry. We conclude that the commercial flour of C. siliqua has a better nutritional potential than that of Prosopis spp., owing to dietary fiber, total phenols, pinitol and antioxidant activity. Our results corroborate the nutritional benefits of the commercial supplements already available for healthy food formulations.
KeywordsFood quality Phenolics Chromatography analysis Sugars Antioxidants
The bilateral Co-operation between Argentine and Portugal, “Development of high protein formulations for bakery and confectionery”, supported by Ministerio de Ciencia, Tecnologia e Innovacion Productiva de la Republica Argentina (MINCyT) and Fundação para a Ciência e a Tecnologia (FCT) (Procº 441.00) from Portugal is acknowledged. The NMR spectrometers used are part of The National NMR Facility, supported by Fundação para a Ciência e a Tecnologia (RECI/BBB-BQB/0230/2012), and we thank Doctor Helena Matias for the technical assistance with the NMR equipment.
Compliance with ethical standards
Conflict of interest
The authors declare that there is no conflict of interest.
- 3.D.P. Makris, P. Kefalas, Food Technol. Biotechnol. 42, 105–108 (2004)Google Scholar
- 5.FAOSTAT (2017) http://www.fao.org/faostat/en/#data/QC/visualize. Accessed June 2018
- 8.H.E. Hajaji, N. Lachkar, K. Alaoui, Y. Cherrah, A. Farah, A. Ennabili, B.E. Bali, M. Lachkar, Rec. Nat. Prod. 4, 193–204 (2010)Google Scholar
- 11.S. Marakis, Food Sci. Technol. 33, 365–383 (1996)Google Scholar
- 12.D. Prokopiuk, D. Cruz, N. Grados, O. Garro, A. Chirat, Multequina 9, 35–45 (2000)Google Scholar
- 18.S.K. Choge, N.M. Pasiecznik, M. Harvey, J. Wright, S.Z. Awan, P.J.C. Harris, Water SA 33, 419–424 (2007)Google Scholar
- 26.R.G. McGuire, HortScience 27, 1254–1255 (1992)Google Scholar
- 27.International Organization for Standardization—ISO 20483:2006—cereals and pulses—determination of the nitrogen content and calculation of the crude protein content—Kjeldahl method; ISO 24557:2009—pulses—Determination of moisture content—air-oven methodGoogle Scholar
- 28.American Association of Cereal Chemists—AACC. Approved methods of analysis: method 08-01.01: ash-basic method; method 30-25.01: crude fat in wheat, corn, and soy flour, feeds, and mixed feeds; method 32-05.01: total dietary fiber; method 80-10.01: determination of glucose in sugar mixtures-glucose oxidase method. (11th ed.). St. Paul. (1999)Google Scholar
- 29.M. Boehringer, Methods of Enzymatic Food Analysis. (Boehringer Publications, Ingelheim am Rhein, 1992)Google Scholar
- 35.L. Iipumbu, Compositional analysis of locally cultivated carob (Ceratonia siliqua) cultivars and development of nutritional food products for a range of market sectors. (Doctoral thesis, Stellenbosch: Stellenbosch University). (2008)Google Scholar
- 38.Z.E. Sikorski, Chemical and Functional Properties of Food Components, 2nd edn. (CRC Press, Boca Raton, 2002), pp. 110, 228, 240–241Google Scholar
- 44.I. Batlle, J. Tous, Carob tree Ceratonia siliqua L. Promoting the conservation and use of underutilized and neglected crops. 17. Institute of Plant Genetics and Crop Plant Research, Gatersleben/International Plant Genetic Resources Institute, Rome 1997Google Scholar
- 48.N. Petkova, I. Petrov, I. Ivanov, R. Mihov, R. Hadjikinova, M. Ognyanov, V. Nikolova, Int. J. Pharm. Sci. Rev. Res. 9, 2189–2195 (2017)Google Scholar
- 49.P. Wursch, S. Del Vedove, J. Rosset, M. Smiley, Lebenson Wiss. Technol. 17, 351–354 (1984)Google Scholar
- 50.A. Curtis, D. Race, Carob Agroforestry in the Low Rainfall Murray Valley: A Market and Economic Assessment. Publication No. 98/8. Rural Industry Research and Development Corporation (RIRDC), Australia (1998)Google Scholar