Antioxidants of Rooibos Beverages. Role of Plant Composition and Processing.

Processing and Impact on Antioxidants in Beverages

Volumn , Issue , 2014, Pages 131-144

  Joubert, Elizabeth ^a   De Beer, Dalene ^a  

^a ARC INFRUITEC NIETVOORBIJ   (South Africa)

Author keywords

Antioxidant; Aspalathin; Extraction; Fermentation; Isoorientin; Nothofagin; Orientin; Oxidation; Rooibos; Storage

Indexed keywords

EID: 84902224960     PISSN: None     EISSN: None     Source Type: Book    
DOI: 10.1016/B978-0-12-404738-9.00014-3     Document Type: Chapter

References (54)

1. Almajano M., Carbó R., Jiménez J., Gordon M. Antioxidant and antimicrobial activities of tea infusions. Food Chem. 2008, 108:55-63.
2. Anonymous South Africa Sector Report Food and Beverages Industry 2007, Swiss Business Hub South Africa, Pretoria, South Africa.
3. Beelders T., Kalili K.M., Joubert E., de Beer D., de Villiers A.J. Comprehensive two-dimensional liquid chromatographic analysis of rooibos (Aspalathus linearis) phenolics. J. Sep. Sci. 2012, 35:1808-1820.
4. Beelders T., Sigge G.O., Joubert E., de Beer D., de Villiers A. Kinetic optimization of the reversed phase liquid chromatographic separation of rooibos tea (Aspalathus linearis) phenolics on conventional high performance liquid chromatographic instrumentation. J. Chromatogr. A. 2012, 1219:128-139.
5. Beltrán-Debón R., Rull A., Rodríguez-Sanabria F., Iswaldi I., Herranz-López M., Aragonès G., Camps J., Alonso-Villaverde C., Menéndez J.A., Micol V., Segura-Carretero A., Joven J. Continuous administration of polyphenols from aqueous rooibos (Aspalathus linearis) extract ameliorates dietary-induced metabolic disturbances in hyperlipidemic mice. Phytomed. 2011, 18:414-424.
6. Bramati L., Aquilano F., Pietta P. Unfermented rooibos tea: quantitative characterization of flavonoids by HPLC-UV and determination of the total antioxidant activity. J. Agric. Food Chem. 2003, 51:7472-7474.
7. Dahlgren R. Revision of the genus Aspalathus. II. The species with ericoid and pinoid leaflets. 7. Subgenus Nortieria. With remarks on rooibos tea cultivation. Bot. Not. 1968, 121:165-208.
8. Dahlgren R. Crotalarieae (Aspalathus). Flora of Southern Africa 1988, 16:84-90.
9. de Beer D., Joubert E., Viljoen M., Manley M. Enhancing aspalathin stability in rooibos (Aspalathus linearis) ready-to-drink iced teas during storage: the role of nano-emulsification and beverage ingredients, citric and ascorbic acids. J. Sci. Food Agric. 2012, 92:274-282.
10. du Toit R., Volsteedt Y., Apostolides Z. Comparison of the antioxidant content of fruits, vegetables and teas measured as vitamin C equivalents. Toxicol. 2001, 166:63-69.
11. Ferreira D., Marais C., Steenkamp J.A., Joubert E. Rooibos tea as a likely health food supplement. Proceedings of the Recent Development of Technologies on Fundamental Foods for Health 1995, 73-88. Korean Society of Food Science and Technology, Seoul, Korea.
12. Heinrich T., Willenberg I., Glomb M.A. Chemistry of color formation during rooibos fermentation. J. Agric. Food Chem. 2012, 60:5221-5228.
13. Iswaldi I., Arráez-Román D., Rodríguez-Medina I., Beltrán-Debón R., Joven J., Segura-Carretero A., Fernández-Gutiérrez A. Identification of phenolic compounds in aqueous and ethanolic rooibos extracts (Aspalathus linearis) by HPLC-ESI-MS (TOF/IT). Anal. Bioanal. Chem. 2011, 400:3643-3654.
14. Ivanova D., Gerova D., Chervenkov T., Yankova T. Polyphenols and antioxidant capacity of Bulgarian medicinal plants. J. Ethnopharmacol. 2005, 96:145-150.
15. Jaganyi D., Wheeler P.J. Rooibos tea: equilibrium and extraction kinetics of aspalathin. Food Chem. 2003, 83:121-126.
16. Joubert E. HPLC quantification of the dihydrochalcones, aspalathin and nothofagin in rooibos tea (Aspalathus linearis) as affected by processing. Food Chem. 1996, 55:403-411.
17. Joubert E., de Beer D. Rooibos (Aspalathus linearis) beyond the farm gate: From herbal tea to potential phytopharmaceutical. S. Afr. J. Bot. 2011, 77:869-886.
18. Joubert E., de Beer D. Phenolic content and antioxidant activity of rooibos food ingredient extracts. J. Food Comp. Anal. 2012, 27:45-51.
19. Joubert E., de Beer D., Malherbe C.J., Muller N., Bonnet S.L., van der Westhuizen J.H., Ferreira D. Occurrence and sensory perception of Z-2-(β-D-glucopyranosyloxy)-3-phenylpropenoic acid in rooibos (Aspalathus linearis). Food Chem. 2013, 136:1078-1085.
20. Joubert E., Gelderblom W.C.A., Louw A., de Beer D. South African herbal teas: Aspalathus linearis, Cyclopia spp. and Athrixia phylicoides-a review. J. Ethnopharmacol. 2008, 119:376-412.
21. Joubert E., Manley M., Botha M. Evaluation of spectrophotometric methods for screening of green rooibos (Aspalathus linearis) and green honeybush (Cyclopia genistoides) extracts for high levels of bio-active compounds. Phytochem. Anal. 2008, 19:169-178.
22. Joubert E., Richards E.S., van der Merwe J.D., de Beer D., Manley M., Gelderblom W.C.A. Effect of species variation and processing on phenolic composition and in vitro antioxidant activity of aqueous extracts of Cyclopia spp. (honeybush tea). J. Agric. Food Chem. 2008, 56:954-963.
23. Joubert E., Schulz H. Production and quality aspects of rooibos tea and related products. A review. J. Appl. Bot. Food Qual. 2006, 80:138-144.
24. Joubert E., Viljoen M., de Beer D., Malherbe C.J., Brand D.J., Manley M. Use of green rooibos (Aspalathus linearis) extract and water-soluble nanomicelles of green rooibos extract encapsulated with ascorbic acid for enhanced aspalathin content in ready-to-drink iced teas. J. Agric. Food Chem. 2010, 58:10965-10971.
25. Joubert E., Viljoen M., de Beer D., Manley M. Effect of heat on aspalathin, iso-orientin, and orientin contents and color of fermented rooibos (Aspalathus linearis) iced tea. J. Agric. Food Chem. 2009, 57:4204-4211.
26. Joubert E., Winterton P., Britz T.J., Ferreira D. Superoxide anion and α,α-diphenylβ-picrylhydrazyl radical scavenging capacity of rooibos (Aspalathus linearis) aqueous extracts, crude phenolic fractions, tannin and flavonoids. Food Res. Int. 2004, 37:133-138.
27. Joubert E., Winterton P., Britz T.J., Gelderblom W.C.A. Antioxidant and pro-oxidant activities of aqueous extracts and crude polyphenolic fractions of rooibos (Aspalathus linearis). J. Agric. Food Chem. 2005, 53:10260-10267.
28. Kazuno S., Yanagida M., Shindo N., Murayama K. Mass spectrometric identification and quantification of glycosyl flavonoids, including dihydrochalcones with neutral loss scan mode. Anal. Biochem. 2005, 347:182-192.
29. Kiselova Y., Ivanova D., Chervenkov T., Gerova D., Galunska B. Correlation between the in vitro antioxidant activity and polyphenol content of aqueous extracts from Bulgarian herbs. Phytother. Res. 2006, 965:961-965.
30. Koch I.S., Muller M., Joubert E., van der Rijst M., Næs T. Sensory characterization of rooibos tea and the development of a rooibos sensory wheel and lexicon. Food Res. Int. 2012, 46:217-228.
31. Koch I.S., Muller N., de Beer D., Næs T., Joubert E. Impact of steam pasteurization on the sensory profile and phenolic composition of rooibos (Aspalathus linearis) herbal tea infusions. Food Res. Int. 2013, 53:704-712.
32. Koeppen B.H., Roux D.G. Aspalathin: a novel C-glycosylflavonoid from Aspalathus linearis. Tetrahedron Lett. 1965, 39:3497-3503.
33. Krafczyk N., Glomb M.A. Characterization of phenolic compounds in rooibos tea. J. Agric. Food Chem. 2008, 56:3368-3376.
34. Krafczyk N., Heinrich T., Porzel A., Glomb M.A. Oxidation of the dihydrochalcone aspalathin leads to dimerization. J. Agric. Food Chem. 2009, 57:6838-6843.
35. Krafczyk N., Woyand F., Glomb M.A. Structure-antioxidant relationship of flavonoids from fermented rooibos. Mol. Nutr. Food Res. 2009, 53:635-642.
36. Lindsey K.L., Motsei M.L., Jäger A.K. Screening of South African food plants for antioxidant activity. J. Food Sci. 2002, 67:2129-2131.
37. Marais C., Rensburg W.J.V., Ferreira D., Steenkamp J.A. (S)- and (R)-eriodictyol-6-Cβ-D-glucopyranoside, novel keys to the fermentation of rooibos (Aspalathus linearis). Phytochem. 2000, 55:43-49.
38. Marais C., Steenkamp J.A., Ferreira D. The occurrence of phenylpyruvic acid in woody plants: Biosynthetic significance. Tetrahedron Lett. 1996, 37:5763-5764.
39. Marais S.S., Marais C., Steenkamp J.A., Malan E., Ferreira D. Progress in the investigation of rooibos tea extractives. Abstracts of the 3rd Tannin Conference 1998, 129-130. Bend, Oregon, USA. G.G. Gross, R.W. Hemingway, T. Yoshida (Eds.).
40. McGaw L.J., Steenkamp V., Eloff J.N. Evaluation of Athrixia bush tea for cytotoxicity, antioxidant activity, caffeine content and presence of pyrrolizidine alkaloids. J. Ethnopharmacol. 2007, 110:16-22.
41. Pacheco-Palencia L.A., Talcott S.T. Chemical stability of açai fruit (Euterpe oleracea Mart.) anthocyanins as influenced by naturally occurring and externally added polyphenolic cofactors in model systems. Food Chem. 2010, 118:17-25.
42. Paździoch-Czochra M., Wideńska A. Spectrofluorimetric determination of hydrogen peroxide scavenging activity. Anal. Chim. Acta 2002, 452:177-184.
43. Pengilly M., Joubert E., van Zyl W.H., Botha A., Bloom M. Enhancement of rooibos (Aspalathus linearis) aqueous extract and antioxidant yield with fungal enzymes. J. Agric. Food Chem. 2008, 56:4047-4053.
44. Piccinelli A.L., De Simone F., Passi S., Rastrelli L. Phenolic constituents and antioxidant activity of Wendita calysina leaves (Burrito), a folk Paraguayan tea. J. Agric. Food Chem. 2004, 52:5863-5868.
45. Rabe C., Steenkamp J.A., Joubert E., Burger J.F.W., Ferreira D. Phenolic metabolites from rooibos tea (Aspalathus linearis). Phytochem. 1994, 35:1559-1565.
46. Schulz H., Joubert E., Schûtze W. Quantification of quality parameters for reliable evaluation of green rooibos (Aspalathus linearis). Eur. Food Res. Technol. 2003, 216:539-543.
47. Shimamura N., Miyase T., Umehara K., Warashina T., Fujii S. Phytoestrogens from Aspalathus linearis. Biol. Pharm. Bull. 2006, 29:1271-1274.
48. Snijman P.W., Joubert E., Ferreira D., Li X.-C., Ding Y., Green I.R., Gelderblom W.C.A. Antioxidant activity of the dihydrochalcones aspalathin and nothofagin and their corresponding flavones in relation to other rooibos (Aspalathus linearis) flavonoids, epigallocatechin gallate, and Trolox. J. Agric. Food Chem. 2009, 57:6678-6684.
49. Standley L., Winterton P., Marnewick J.L., Gelderblom W.C.A., Joubert E., Britz T.J. Influence of processing stages on antimutagenic and antioxidant potentials of rooibos tea. J. Agric. Food Chem. 2001, 49:114-117.
50. van Heerden F., van Wyk B.E., Viljoen A.M., Steenkamp P. Phenolic variation in wild populations of Aspalathus linearis (rooibos tea). Biochem. Syst. Ecol. 2003, 31:885-895.
51. von Gadow A., Joubert E., Hansmann C.F. Comparison of the antioxidant activity of aspalathin with that of other plant phenols of rooibos tea (Aspalathus linearis), α-tocopherol, BHT, and BHA. J. Agric. Food Chem. 1997, 45:632-638.
52. von Gadow A., Joubert E., Hansmann C.F. Comparison of the antioxidant activity of rooibos tea (Aspalathus linearis) with green, oolong and black tea. Food Chem. 1997, 60:73-77.
53. von Gadow A., Joubert E., Hansmann C.F. Effect of extraction time and additional heating on the antioxidant activity of rooibos tea (Aspalathus linearis) extracts. J. Agric. Food Chem. 1997, 45:1370-1374.
54. Winterton P. Antioxidant activity of rooibos tea (Aspalathus linearis) in model lipid and radical generating systems. MSc. Food Science thesis 1999, Stellenbosch University, Stellenbosch, South Africa.