Nutrient Content of Carob Pod (Ceratonia siliqua L.) Flour Prepared Commercially and Domestically

Abstract

Although the fruit of the carob tree (Ceratonia siliqua L. Fabaceae) is nutritious and widely available in Turkey, especially in West and South Anatolia, much remains to be learned about its nutrient composition. The main goal of our study was to determine if there are differences in the content of certain nutrients in commercially-prepared carob flour (CPCP) and domestic or home-prepared carob powder (HPCP). Sucrose was the main sugar in CPCP and HPCP. Total protein was 40% lower in CPCP than HPCP due mainly to decreases in the content of several essential amino acids. However, except for lysine in CPCP, HPCP and CPCP compared favourably to a WHO protein standard. There were large differences in terms of their content of the two essential fatty acids, linoleic and α-linolenic acid, and the linoleic acid/α-linolenic acid ratio was 3.6 for CPCP, and 6.1 for HPCP. Manganese and iron were 2.5-fold higher in HPCP than CPCP. This study demonstrates that carob flour prepared in either the household or industrially is a good source of many, but not all essential nutrients, and that commercial processing of carob fruit into flour seems to affect its content of several important nutrients.

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Abbreviations

AA:

Ascorbic acid

HDL:

High-density lipoprotein

HPCP:

Home-prepared carob powder

HPLC:

High-performance liquid chromatography

LDL:

Low-density lipoprotein

MUSFA:

Monounsaturated fatty acid

MVD:

Micro-vacuum degasser

CPCP:

Commercially-prepared carob powder

PUSFA:

Polyunsaturated fatty acid

RID:

Refractive index detector

TCC:

Thermostated column compartment

WHO:

World Health Organization

References

  1. 1.

    Chamberlain DF (1970) Ceratonia L. In: Davis PH (ed) Flora of Turkey and the East Aegean Islands. Edinburgh University Press, Edinburgh, pp 7–8

    Google Scholar 

  2. 2.

    Ayaz FA, Torun H, Ayaz S, Correia PJ, Alaiz M, Sanz C, Gruz J, Strnad M (2007) Determination of chemical composition of Anotolian carob pod (Ceratonia siliqua L.): sugars, amino and organic acid, minerals and phenolic compounds. J Food Qual 30:1040–1055

    Article  CAS  Google Scholar 

  3. 3.

    Roukas T (1999) Citric acid production from carob pod by solid-state fermentation. Enzyme Microb Technol 24:54–59

    Article  CAS  Google Scholar 

  4. 4.

    Biner B, Gubbuk H, Karhan M, Aksu M, Pekmezci M (2007) Sugar profiles of the pods of cultivated and wild types of carob bean (Ceratonia siliqua L.) in Turkey. Food Chem 100:1453–1455

    Article  CAS  Google Scholar 

  5. 5.

    Yousif A, Alghzawi HM (2000) Processing and characterization of carob powder. Food Chem 69:283–287

    Article  CAS  Google Scholar 

  6. 6.

    Makris DP, Kefalas P (2004) Carob pods (Ceratonia siliqua L.) as a source of polyphenolic antioxidants. Food Technol Biotechnol 42:105–108

    CAS  Google Scholar 

  7. 7.

    Fletcher R (1997) 13. Carob agroforestry in Portugal and Spain. The Australian New Crops Newsletter. Issue No 7. University of Queesland, Queesland, Australia, 4 p

  8. 8.

    Glew RH, Glew RS, Chuang L-T, Huang Y-S, Millson M, Constants D, Vanderjagt DJ (2006) Amino acid, mineral and fatty acid content of pumpkin seeds (Cucurbita spp) and Cyperus esculentus nuts in the Republic of Niger. Plant Food Hum Nutr 61:51–56

    Article  CAS  Google Scholar 

  9. 9.

    Cohen SA, Strydom DJ (1988) Amino acid analysis utilizing phenylisothiocyanate derivatives. Anal Biochem 174:1–16

    Article  CAS  Google Scholar 

  10. 10.

    Bidlingmeyer BA, Cohen SA, Tarvin TL (1984) Rapid analysis of amino acids of amino acids using precolumn derivatization. J Chromatogr 336:93–104

    Article  CAS  Google Scholar 

  11. 11.

    Morrison WR, Smith LM (1964) Preparation of fatty acid methyl esters and dimethylacetals from lipids with boron trifluoride-methanol. J Lipid Res 5:600–608

    CAS  Google Scholar 

  12. 12.

    Avallone R, Plessi M, Baraldi M, Monzani A (1997) Determination of the chemical composition of carob (Ceratonia siliqua): protein, fat, carbohydrates, and tannins. J Agric Food Chem 10:166–172

    CAS  Google Scholar 

  13. 13.

    Würsch P, Del Vedovo S, Rosset J, Smiley M (1984) The tannin granules from ripe carob pod. Lebensmittel-Wissenschaft und Technologie 17:351–354

    Google Scholar 

  14. 14.

    Saura-Calixto F (1988) Effect of condensed tannins in the analysis of dietary fibre in carob pods. J Food Sci 53:1769–1771

    Article  CAS  Google Scholar 

  15. 15.

    Roukas T (1996) Continuous ethanol production from nonsterilized carob pod extract by immobilized Saccharomyces cerevisiae on mineral kissiris using a two-reactor system. Appl Biochem Biotechnol 59:299–307

    Article  CAS  Google Scholar 

  16. 16.

    van Boekel MAJS (2006) Formation of flavour compounds in the Maillard reaction. Biotechnol Adv 24:230–233

    Article  Google Scholar 

  17. 17.

    Danehy JP (1986) Maillard reactions: nonenzymatic browning in food systems with special reference to the development of flavour. Advances in Food Research. vol. 30 Academic Press Inc

  18. 18.

    Morton JF (1987) Carob. In: Dowling CF Jr (ed) Fruits of warm climates. Miami, FL, pp 121–124

  19. 19.

    FAO/WHO/UNU (1985) Energy and protein requirements. Report of a Joint FAO/WHO/UNU Expert Consultation. WHO Tech. Rep. Ser. No. 724. Geneva: WHO

  20. 20.

    Massaro M, Carluccio MA, De Caterina R (1999) Direct vascular antiatherogenic effects of oleic acid: a clue to the cardioprotective effects of the Mediterranean diet. Cardiologia 44(6):507–513

    CAS  Google Scholar 

  21. 21.

    Rizzo WB, Watkins PA, Phillips MW, Cranin D, Campbell B, Avigan J (1986) Adrenoleukodystrophy: oleic acid lowers fibroblast saturated C22–26 fatty acids. Neurology 36:357–361

    CAS  Google Scholar 

  22. 22.

    Simopoulos AP (2002) The importance of the ratio of omega-6/omega-3 essential fatty acids. Biomed Pharmacother 56:365–379

    Article  CAS  Google Scholar 

  23. 23.

    Mozaffarian D, Ascherio A, Hu FB, Stampfer MJ, Willett W, Siscovick D, Rimm EB (2005) Interplay between different polyunsaturated fatty acids and risk of coronary heart disease in men. Circulation 111:157–164

    Article  CAS  Google Scholar 

  24. 24.

    Souci SW, Fachmann W, Kraut H (1994) Food composition and nutrition tables, 5th edn. CRC, Boca Raton, pp 803–897

    Google Scholar 

  25. 25.

    Glew RH, Ayaz FA, Vanderjagt DJ, Millson M, Dris R, Niskanen R (2003) Mineral composition of medlar (Mespilus germanica) fruit at different stages of maturity. J Food Qual 26:441–447

    Article  CAS  Google Scholar 

  26. 26.

    Ouzouni PK, Veltsistas PG, Paleologos EK, Riganakos KA (2007) Determination of metal content in wild edible mushroom species from regions of Greece. J Food Comp Anal 20:480–486

    Article  CAS  Google Scholar 

  27. 27.

    Chilsom JJ (1965) Chronic lead intoxication in children. Dev Med Child Neurol 7:529–536

    Google Scholar 

  28. 28.

    FAO/WHO (1993) Evaluation of certain food additives and contaminants. WHO Technical Report series 837. Geneva: FAO/WHO

Download references

Acknowledgement

Some of the chemicals, reagents and instrumentation used in the present study were purchased using funds awarded by the Scientific and Technological Research Council of Turkey (TUBITAK) (TUBITAK-TBAG Project No.: 103 T152). The authors gratefully acknowledge this support.

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Correspondence to Faik A. Ayaz.

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Ayaz, F.A., Torun, H., Glew, R.H. et al. Nutrient Content of Carob Pod (Ceratonia siliqua L.) Flour Prepared Commercially and Domestically. Plant Foods Hum Nutr 64, 286 (2009). https://doi.org/10.1007/s11130-009-0130-3

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Keywords

  • Ceratonia siliqua
  • Carob pod
  • Sugar
  • Minerals
  • Fatty acids
  • Amino acids