Biology and Life Sciences

Biology and Life Sciences


Pages: 8  ,  Volume: 12  ,  Issue: 1 , September   2018
Received: 17 Sep 2018  ,  Published: 22 September 2018
Views: 194  ,  Download: 0


# Author Name
1 U.W.L.M. Kumarasiri
2 K. premakumar
3 D.S. Khurdiya


Effect of microwave blanching on the nutritional characteristics of banana puree was investigated and compared with conventional water bath blanching method. Two lots of banana puree were prepared using electrical blender. Fully ripe, peeled bananas (cv. Dwarf Cavendish) were blanched in domestic microwave oven for 3 minutes and water bath at 100OC for 8 minutes separately and blended. Banana puree prepared from the microwave blanched banana fruits had high ascorbic acid (6.3 mg/100 g), total soluble solids (18.3 O Brix), total sugars (14.7%), tannins (0.045%), acidity (0.29%) and organoleptic score (7.2) but had low pH (4.64) compared to banana puree prepared from the water bath blanched banana fruits. Enzymatic browning was completely retarded by both blanching treatments. However, non-enzymatic browning had non-significant difference among blanching treatments. Microwave and thermal inactivation of Polyphenol oxidase, Peroxidase and Pectin methyl esterase were also compared.


  • Microwave blanching
  • Banana puree
  • Thermal inactivation
  • Enzymes
  • Non-enzymatic browning
  • Nutritional quality
  • References

    Amerine MA, Pangborn RN and Rosessler EB (1965) Principles of Sensory Evaluation of Food, Academic Press, London

    Boyes S, Chevis P, Holden J and Perera C (19:97) Microwave and water blanching of corn kernels : Control of uniformity of heating during microwave blanching. J of Food Process Preserv 2]: 461-484

    Cano MP, Ancos B de, Lobo MG and Santos M (I997) Improvement of frozen banana (Musa cavendish cv. enann) colour by blanching, relationship between browning, phenols and Polyphenol oxidase and Peroxidase activities. Food Res Technol 204(1): 60-65

    Chadha KL (1997) Availability of raw materials for fruits and vegetable processing industry. Indian Food Packer 51(6): 10-16

    FAO (1997) Food and Agricultural Production Year Book. Food and Agricultural Organization (FAO), Rome Giami SY (1991) Effects of pretreatments on the texture and ascorbic acid content "of Frozen plantain pulp (Musa paradisiaca). J Sci Food Agri 55(4): 661-666

    Guines B, Bayhindirh A (1993) Peroxidase and Lypoxygenase inactivation during blanching of green beans, green peas and carrots. Food Technol 26: 406-410

    Hagerman AB, Austin PJ (1986) Continuous spectrophotometric assay for plant Pectin methyl esterase. J Agri Food Chem 34(3): 440-444

    Jonas R (1994) Processed banana ingredients and their applications. Food Market Techno] 8(2): 22-24

    Kaur C, Khurdiya DS, Pal RK, Kapoor HC (I999) Effect of microwave heating and conventional processing on the nutritional qualities of tomato juice, J Food Sci Tech 36(4): 331-333

    Knutson KM, Marth EM, Wagner MK (1987) Microwave heating of food. Food Sci Technol 20(3): 101-110

    Luh, BS, Woodroof, JG (1975) Commercial Vegetable Processing. The AVI Publishing Co., West Port, C1T

    Mabesa LB, Baldwin RE (1978) Flavour and colour of peas and carrots cooked by microwave. J Microw Power 13(4): 321

    Palmer IX (1963) Banana Polyphenol oxidase, preparation and properties. Plant Physiol 38: 508-513

    Quenzer NM, Bums, EE (1981) Effects of microwave, steam and water blanching on freeze dried spinach. J Food Sci 46: 410-413

    Ramaswamy HS, Fakhouri MO (1998) Microwave blanching: Effect on Peroxidase activity, texture and quality of Peroxidase activity, texture and quality of frozen vegetables. J Food Sci Tec/mol 35(3): 216-222

    Ranganna S (1995) Hand Book of Analysis and Quality Control for Fruit and Vegetable Products. 2nd Edn. Tata McGrawHill Publishing Company Limited, New Delhi

    Sadasivam S, Manickam A (1996) Biochemical Methods, 2nd Edn. New Age International (P) Ltd. Publishers, New Delhi

    Sahni CK, Khurdiya DS, Dalal MA, Maini SB (1997) Microwave Processing of Foods Potentialities and Prospects. Indian Food Packer 51(5): 32-42

    Sahni CK. Khurdiya DS, Dalal MA, Kapoor HC (1998) Microwave vs Conventional blanching of french beans (Phaseolus vulagaris) for freezing. Indian Food Packer 52(2): 14-20

    Singh HP, Uma S (1996) Banana cultivation in India. National Research Centre on Banana (NRCB), Trichy, India

    Singhal V (1999) Indian Agriculture 1999. Indian Economic Data Research Centre, New Delhi

    Waskar DP, Roy SK (1993) Studies on harvesting, handling, transportation and marketing of banana. Indian Food Packer 47(4): 29-38