Effect of processing conditions on characteristics of dehydrated bee-pollen and correlation between quality parameters

Author(s)

Machado De-Melo, Adriane Alexandre ^[1] ; Miranda Fernandes Estevinho, Maria Leticia ^[2] ; Gasparotto Sattler, Jose Augusto ^[1] ; Souza, Bianca Rodrigues ^[1] ; Freitas, Alex da Silva ^[3] ; Barth, Ortrud Monika ^[4] ; Almeida-Muradian, Ligia Bicudo ^[1]

Affiliation

^[1] Univ Sao Paulo, Lab Food Anal, Dept Food & Expt Nutr, Sch Pharmaceut Sci, BR-05580000 Sao Paulo, SP - Brazil

^[2] Polytech Inst Braganca, CIMO Mt Res Ctr, Dept Biol & Biotechnol, Braganca - Brazil

^[3] Univ Fed Fluminense, Lab Marine Geol, Niteroi, RJ - Brazil

^[4] Univ Fed Rio de Janeiro, Palynol Lab, Dept Geol, Inst Geosci, Rio De Janeiro, RJ - Brazil

• Document type: Journal article
• Source: LWT-FOOD SCIENCE AND TECHNOLOGY; v. 65, p. 808-815, JAN 2016.
• Web of Science Citations: 17

Abstract

The aim of the present study was to compare the physical, chemical and biological parameters and the microbiological quality of bee-pollen samples treated with different dehydration processes and to correlate the results. The samples came mainly from Eucalyptus (Myrtaceae) and Eupatorium (Asteraceae) plants. The dehydration conditions of the samples influenced the L{*}a{*}b{*} colour parameters and the biological value. Unlike the protein and lipid content, the glucose and fructose content were unaffected. The vitamin E content (27.2 +/- 0.3 mu g/g 27.5 +/- 0.4 mu g/g) in oven-dehydrated samples with forced air circulation was significantly lower (P < 0.05) compared with lyophilized samples (37.5 +/- 0.2 g/100 g, 53.7 +/- 3.9 g/100 g). Overall, the results were inconclusive for vitamin B complex, minerals and microbiological indicators. There was a positive correlation between the colour parameters L{*} and b{*} and the total phenolic content, as well as between phenolic content and the antioxidant and antimicrobial capacity. The data indicate that lyophilization might be a viable alternative to the current process, resulting in dehydrated bee-pollen with higher biological activity. (C) 2015 Elsevier Ltd. All rights reserved. (AU)

• FAPESP's process: 11/11746-8 - Physicochemical characterization, microbiological quality, biological properties and botanical origin of dehydrated bee pollen
• Grantee: Adriane Alexandre Machado de Melo
• Support Opportunities: Scholarships in Brazil - Doctorate
• FAPESP's process: 13/23179-6 - Phenolic compounds, microbiological quality and antimicrobial capacity of dehydrated bee pollen
• Grantee: Adriane Alexandre Machado de Melo
• Support Opportunities: Scholarships abroad - Research Internship - Doctorate