Home > III International Conference on Agricultural and Food Engineering > Antioxidant content and activity in different parts of pomelo [Citrus grandis (L.) Osbeck] by-products

Articles

Antioxidant content and activity in different parts of pomelo [Citrus grandis (L.) Osbeck] by-products

Article number

1152_4

Pages

27 – 34

Language

English

Abstract

This study aimed to investigate the total antioxidant content and activity in different parts of pomelo by-products, namely flavedo, albedo and segment membrane.
Total phenolic content (TPC) was determined using Folin-Ciocalteu method while total flavonoid content (TFC) was determined using aluminium chloride colorimetric method.
The total antioxidant activity was determined by performing DPPH free radical scavenging assay and ferric ion reducing antioxidant power (FRAP) assay.
Albedo possessed the highest TPC and TFC while flavedo demonstrated the highest antioxidant activity in both assays as compared to other tissues.
Pearson correlation tests revealed that there were no correlations between TPC and EC₅₀ as well as FRAP value.
There was also a lack of relationship between TFC and antioxidant activity as determined in DPPH and FRAP assays.
The pomelo by-products of ‘Ledang’ possessed higher antioxidant properties than previous studies and therefore can be considered as a new source of natural antioxidants.

Publication

III International Conference on Agricultural and Food Engineering

Authors

S.Q. Chang, A. Azrina

Keywords

‘Ledang’, flavedo, albedo, segment membrane, phenolics, flavonoids

Full text

https://doi.org/10.17660/ActaHortic.2017.1152.4

Online Articles (59)

1. A stochastic rainfall generator model for simulation of daily rainfall events in Kurau catchment: model testing

R.M. Fadhil | M.K. Rowshon | D. Ahmad | A. Fikri | W. Aimrun

2. Analysis of annual maximum rainfall in Kelantan, Malaysia

J.L. Ng | S. Abd Aziz | Y.F. Huang | A. Wayayok | M.K. Rowshon

3. Antioxidant capacity of banana cultivar ‘Nipah’ (Musa acuminate balbisiana) extracted with different solvents

N.A. Othman | R. Shamsudin | Z. Othman

4. Antioxidant content and activity in different parts of pomelo [Citrus grandis (L.) Osbeck] by-products

S.Q. Chang | A. Azrina

5. Changes in quality of fresh-cut wax-apple (Syzygium samarangense) as affected by storage period and cut sizes

Y. Awang | N.I. Kadir | H. Yahya

6. Changes in stem diameter of blueberries from dormant period to bud opening

M. Shimizu | T. Chosa | S. Tojo

7. Classification of sweet corn based on storage time after harvest using near infrared spectroscopy

S. Suktanarak | P. Supprung | S. Teerachaichayut

8. Colour changes during deep-frying of sesame cracker’s dough balls

S.B. Tan | R. Shamsudin | A.P. Mohammed | N.A. Abdul Rahman

9. Design and fabrication of a direct passive solar dryer for tilapia fish filets

E.G. Ikrang | A.A. Whyte | A.M. Maurice | C.O. Akubuo | D.I. Onwude

10. of maturity stages of oil palm fresh fruit bunches using multispectral imaging method

T. Groß | N. Hashim | S. Khairunniza-Bejo | S. Abd Aziz | M. Zude-Sasse

11. Developing geostatistical mapping tools for precision farming of rice

E. Jahanshiri | A.R.M. Shariff | S. Khairunniza-Bejo | A. Wayayok

12. Development of an experimental rig for soil and crop residues management

B.G. Jahun | D. Ahmad | M.R. Mahdi | S. Sulaiman

13. Development of coconut-based floating structure for stand-alone solar PV system in the tropics

N. Fauzan | M.E. Ya¿acob | M.N. Mokhtar | H. Hizam

14. Development of logistics system model on vegetables agribusiness cluster using discrete event simulation

T. Perdana | S. Sanjaya

15. Different combinations of light spectrum of LED and nitrogen affect the growth and yield of lettuce (Lactuca sativa)

N. Anuar | N. Ibrahim | Y. Awang

16. Digital growth response maps for assessment of cooling requirement in greenhouse production of tomato

17. Effect of ball milling and ultrasonication time on particle size of chitosan for potential nanofiller in food packaging film

R.A. Shapi¿i | S.H. Othman | M. Nazli Naim | R. Kadir Basha

18. Effect of growing media from agriculture waste onseed germination of tomato (Lycopersicon esculentum Mill. ‘Sida’)

P. Dittakit | S. Worada

19. Effect of low temperature storage on the postharvest quality of minimally processed shallot (Allium ascalonicum L.)

Y.A. Purwanto | R.B. Nugraha

20. Effect of modified atmosphere packaging (MAP) on physicochemical of fresh-cut bottle gourd

O. Lailatul Akma | Z.A. Nur Hanani

21. Effect of moisture content on some physical properties of mucuna bean seed

A.F. Alonge | P.J. Etim

22. Effect of nitrogen fertilizer to growth, biomass and grain yield of paddy

S. Khairunniza-Bejo | Z. Zulkifli | F.M. Muharam

23. Effects of chemical surface coating (Rain-Z^TM) on the powder yield of spray-drying: a preliminary approach

N. Ramlan | N.W.M. Zamri | M.Y. Maskat | S. Aizad | S.I. Zubairi

24. Effects of legume flours on batter rheology and cake physical quality

A. Aydogdu | B.C. Ozkahraman | G. Sumnu | S. Sahin

25. Effects of red and blue spectrum of light emitting diodes (LEDs) on the growth and photosynthesis of lemon basil (Ocimum × citriodorum)

Z. Mat Daud | Y. Awang | F. Ismail | M.T.M. Mohamed

26. Emissivity determination of oil palm fresh fruit ripeness using a thermal imaging technique

S. Zolfagharnassab | A.R. Mohamed Shariff | R. Ehsani

27. Evaluation of microwave drying characteristics of Ficus deltoidea leaves by using thin layer drying models

H. Mohd Johar | I.H. Rukunudin | F.H. Kazsim | R. Ruslan

28. Evaluation of total flavonoid content of Labisia pumila leaves based on impedance measurements

D. Jamaludin | S. Abd Aziz | D. Ahmad | H.Z.E. Jaafar

29. Extraction and characterization of pectin from sweet potato (Ipomoea batatas) peels using alkaline extraction method

D.N. Abang Zaidel | N.H. Hamidon | N. Mat Zahir

30. Fundamental and empirical modelling of co-current spray drying process – a review

Z. Abdullah | F.S. Taip | M.K. Siti Mazlina | R.Z. Abdul Rahman

31. Gel-based proteomic study for differential expression of Hevea brasiliensis root proteins in response to infection by soil fungus Rigidoporus microporus

N. Siddiqui | C. Middleton | C. Ribeiro | S. Atan | A. Di Cola

32. Inculcating herbal plots as effective cooling mechanism in urban planning

33. Investigation of physical properties and moisture sorption behaviour of different marshmallow formulations

E. Kirtil | A. Aydogdu | M.H. Oztop

34. In vitro propagation of olive cultivars ‘Frontio’, ‘Earlik’, ‘Gemlik’

Q.U.A. Farooq | A. Fatima | N. Murtaza | F. Hussain Ferdosi

35. Kinetic study of copper (II) removal from aqueous solution onto unmodified kenaf fibre

R.Z. Maryam | C.M. Hasfalina | C.A. Luqman

36. Livestock wastewater generation and farm management: the gap analysis

N.N. Nik Daud | C.S. Anijiofor

37. Mathematical modelling and validation of oil migration on a model chocolate system using magnetic resonance imaging (MRI)

S. Cikrikci | M.H. Oztop

38. Membership function model for defining optimality of vapor pressure deficit in closed-field cultivation of tomato

39. Modelling the streamflow of a river basin using enhanced hydro-meteorological data in Malaysia

N.S. Dlamini | M.K. Rowshon | A. Fikhri | S.H. Lai | M.S.F. Mohd

40. Non-destructive prediction of moisture content of lime (Citrus aurantifolia Swingle ‘Paan’) by multiple regression analysis of its electrical and physical properties

H.T. Huong | S. Teerachaichayut

41. Oil quality monitoring during deep fat frying using Raman spectroscopy

N.U.A. Ibrahim | S. Abd Aziz | N. Hashim

42. Optical method for the detection of moisture content of pumpkin during drying

D.I. Onwude | N. Hashim | K.M. Solehin

43. Physical and mechanical properties of fresh and sterilized oil palm fruitlets

C.J. Vincent | R. Shamsudin | A.S. Baharuddin | R. Yunus

44. Postharvest deterioration of tomato (Solanum lycopersicum) and associated effects on antioxidant bioactive contents

O.J. Esua | N.L. Chin | Y.A. Yusof | R. Sukor

45. Prediction of banana quality attributes and ripeness classification using artificial neural network

S.E. Adebayo | N. Hashim | K. Abdan | M. Hanafi | M. Zude-Sasse

46. Preliminary study on formation of ex situ fouling deposit from palm-based coconut milk substitute and RBD palm oil

47. Quality improvement of fresh strawberry (Fragaria sp. ‘Earlibrite’) through applying salt stress treatment in a tropical environment

F.F. Mohammad Affan | I. Wahyuningsih | M. Maksum | N. Khuriyati

48. RGB imaging system for monitoring quality changes of seedless watermelon during storage

M. Mohd Ali | N. Hashim | S. Khairunniza-Bejo | R. Shamsudin | W.N.F.H. Wan Sembak

49. Selected orange-fleshed sweet potato genotypes with high dry matter and beta-carotene contents

E. Ginting | R. Yulifianti | M. Jusuf

50. Steaming process of paddy to improve quality and reduce glycemic index of parboiled rice

R. Hasbullah | L. Pujantoro | S. Koswara | E.G. Fadhallah | M. Surahman

51. The determination of nitrogen value at various reading points on rice leaf using RGB imaging

N.A. Bachik | N. Hashim | A. Wayayok | H. Che Man | S. Saipin

52. The effect of enriched compost and nitrogen fertilizer on the growth and yield of sweet corn (Zea mays L.)

D.H. Pangaribuan | N. Nurmauli | S.F. Sengadji

53. The effect of onion skin powder addition on extrudate properties

B. Tonyali | I. Sensoy

54. The influence of dry-blending operational parameters on homogeneity of milk formula powder

N.S.M. Dali | N.A. Bakar | N.A. Aziz | Y.A. Yusof | F.S. Taip

55. The potential of backscattering imaging in evaluating the ripening stages of bananas

N. Zulkifli | N. Hashim | K. Abdan | M. Hanafi

56. Thermal comfort differences in poultry houses and its influence on growth performance of broiler strains

W.N.U. Perera | C.M.B. Dematawewa

57. Transforming agricultural supply-chain through postharvest engineering and appropriate technology

C.P.M. Sianipar | G. Yudoko | K. Dowaki

58. Utility of single nucleotide polymorphism markers in clonal profiling of Hevea brasiliensis

59. Value chain financing model on shallot commodities using system thinking approach

T. Perdana | F. Rahayu