Home > IV International Symposium on Applications of Modelling as an Innovative Technology in the Agri-Food-Chain: Model-IT > SEASONAL VARIATION OF TOTAL ANTIOXIDANT CONTENTS OF WILD BUSH TEA

Articles

SEASONAL VARIATION OF TOTAL ANTIOXIDANT CONTENTS OF WILD BUSH TEA

Article number

802_35

Pages

273 – 276

Language

English

Abstract

The objective of this study was to determine the seasonal variation on the total antioxidant contents of wild bush tea leaves. At harvest, leaves were freeze dried and ground for total antioxidants using the 2, 2-diphenyl-1-picrylhydrazyl (DPPH) method.
The results of this study demonstrated that the total antioxidants contents were lowest during autumn (66%) and spring (67%) whereas the highest were during winter and summer (99%). Thus, suggesting winter and summer as best time to maximize the potent antioxidant contents of wild bush tea leaves.

Publication

IV International Symposium on Applications of Modelling as an Innovative Technology in the Agri-Food-Chain: Model-IT

Authors

F.N. Mudau, I.D. Mogotlane, P.W. Mashela, P. Soundy

Keywords

Athrixia phylicoides DC, total antioxidants contents, season, South Africa

Full text

https://doi.org/10.17660/ActaHortic.2008.802.35

Online Articles (59)

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3. CALCULATION OF BIOT NUMBERS IN FOOD DRYING

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4. MODELING AND OPTIMIZATION OF A CONTINUOUS-FLOW MICROFLUIDIC BIOCHIP FOR FOOD ANALYSIS

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9. MODELLING CONDENSATION IN A MODIFIED ATMOSPHERE PACKAGE FOR FRUIT UNDER CHANGING ENVIRONMENTAL CONDITIONS

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B. Vanthoor | C. Stanghellini | E. van Henten | P. de Visser

11. A SIMPLE ATMOSPHERIC EVAPORATION DEVICE AS A USEFUL TOOL FOR VALIDATION OF AIR FLOW MODELS AND FOR PROCESS CONTROL APPLICATIONS

M. Linke | O. Schlüter | M. Geyer

12. DEVELOPMENT OF FORMAL DYNAMIC MODELS WITH MICROSOFT EXCEL FOR GREENHOUSE CLIMATE CONTROL

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13. ESTIMATION OF THE ENERGY CONSUMPTION OF ELECTRICAL WIRE HEATING IN SAND SUBSTRATES ACCORDING TO THE TARGET ROOT ZONE TEMPERATURE

14. MASS TRANSFER KINETICS DURING OSMOTIC DEHYDRATION OF CHERRY TOMATOES PRE-TREATED BY HIGH HYDROSTATIC PRESSURE

E.K. Dermesonlouoglou | S. Boulekou | P.S. Taoukis

15. STRESSES AND CRACKING IN FREEZING PART-BAKED BREAD: A NUMERICAL MODEL

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16. A LIBRARY OF SOFTWARE COMPONENTS FOR THE OPERATION OF THERMAL FOOD PROCESSING PLANTS

C. Vilas | M.R. García | J.R. Banga | A.A. Alonso

17. MULTIPHYSICS DURING BREAD MAKING: NUMERICAL MODELLING AND TECHNOLOGICAL TEACHINGS FROM SIMULATIONS

18. REAL TIME OPTIMIZATION OF THE THERMAL PROCESSING OF BIOPRODUCTS

M.R. Garcia | C. Vilas | A.A. Alonso | E. Balsa-Canto

19. MODELLING FLUID FLOW, HEAT TRANSFER AND CRYSTALLIZATION IN A SCRAPED SURFACE HEAT EXCHANGER

H. Benkhelifa | A. Haddad Amamou | G. Alvarez | D. Flick

20. THERMAL CONDUCTIVITY MODELLING OF FREEZE DRIED SEA BREAM FILLETS AS A FUNCTION OF TEMPERATURE AND MOISTURE CONTENT

G. Katsaros | Z. Monios | P. Taoukis

21. CONTROL PARAMETERS FOR SOUS-VIDE COOK-CHILL PROCESSING OF BORAGE (BORAGO OFFICINALIS) STEMS

J. Mir | R. Oria | M.L. Salvador

22. NUMERICAL MODELLING OF COUPLED HEAT AND MASS TRANSPORT IN VACUUM FRYING OF POTATO CYLINDERS

J. Mir | R. Oria | M.L. Salvador

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I. Otero-Muras | L.T. Antelo | A. Alonso | R. Perez

24. EFFECT OF THE VARIATION OF ELECTROMAGNETIC WAVE PROFILES (MICROWAVES) DURING THE HEATING OF FOODS

L.A. Campañone | R.H. Mascheroni | G. Rodríguez | A. Bava

25. SIMULATION OF NATURAL FIBRE CLEANING IN A COMB SHAKER BY MEANS OF A GEOMETRIC-STATISTICAL MODEL

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26. MODELING THE IMPACT OF TRACEABILITY ON HARVESTING AND TRANSPORT OPERATIONS OF RICE CROPS

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30. THE PROPAGATION OF VARIATION IN GLUCOSINOLATE LEVELS AS EFFECTED BY CONTROLLED ATMOSPHERE AND TEMPERATURE IN A BROCCOLI BATCH

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31. EVALUATION OF PHOTON MIGRATION AND LASER-INDUCED BACKSCATTERING IN KIWIFRUIT

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32. INTEGRATING SIMULATION AND OPTIMIZATION FOR INVENTORY CONTROL OF PERISHABLE ITEMS

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33. SHELF-LIFE PREDICTION OF READY-TO-EAT FOOD PRODUCTS VIA SURVIVAL ANALYSIS

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34. MODELING OVOPRODUCT SPOILAGE WITH RED LED LIGHT

E.C. Correa | V. Diaz-Barcos | J. Fuentes-Pila | P. Barreiro | M.C. González

35. SEASONAL VARIATION OF TOTAL ANTIOXIDANT CONTENTS OF WILD BUSH TEA

F.N. Mudau | I.D. Mogotlane | P.W. Mashela | P. Soundy

36. A MULTI-COMPARTMENTAL MODEL FOR ESTIMATING METAL BIOACCUMULATION IN FISH

I. Otero-Muras | A. Franco | E. Balsa-Canto | E. Roca | A.A. Alonso

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T. Rithmanee | G. Bumroonggit | P. Boonprasom

51. MODELING PSYCHROMETRIC DATA IN REAL-TIME FRUIT LOGISTICS MONITORING

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