Applicability of fruit blanching and intermittent microwave-convective belt drying to industrial peel waste of different mango cultivars for the recovery of functional coproducts

© 2017 Elsevier B.V. To exploit the full potential of industrial mango peel waste (MPW0) as a starting material for the recovery of bioactive and functional coproducts despite its seasonality, it must be processed efficiently into a storable dried byproduct of uniform high quality, irrespective of i...

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Main Authors: Andreas Nagel, Sybille Neidhart, Sabine Kuebler (née Wulfkuehler), Peter Elstner, Tim Anders, Sabine Korhummel, Tanja Sulzer, Stefanie Kienzle, Carina Winkler, Saiko Qadri, Christine Rentschler, Niramol Pholpipattanapong, Jumnong Wuthisomboon, Hans Ulrich Endress, Pittaya Sruamsiri, Reinhold Carle
Format: Journal
Published: 2018
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http://cmuir.cmu.ac.th/jspui/handle/6653943832/56396
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spelling th-cmuir.6653943832-563962018-09-05T03:25:58Z Applicability of fruit blanching and intermittent microwave-convective belt drying to industrial peel waste of different mango cultivars for the recovery of functional coproducts Andreas Nagel Sybille Neidhart Sabine Kuebler (née Wulfkuehler) Peter Elstner Tim Anders Sabine Korhummel Tanja Sulzer Stefanie Kienzle Carina Winkler Saiko Qadri Christine Rentschler Niramol Pholpipattanapong Jumnong Wuthisomboon Hans Ulrich Endress Pittaya Sruamsiri Reinhold Carle Agricultural and Biological Sciences © 2017 Elsevier B.V. To exploit the full potential of industrial mango peel waste (MPW0) as a starting material for the recovery of bioactive and functional coproducts despite its seasonality, it must be processed efficiently into a storable dried byproduct of uniform high quality, irrespective of impacts of different cultivars and ripeness. The focus of this feasibility study, performed on the pilot plant scale, was on technological options for three key process stages in the manufacture of dried mango peel (DMP) as a possible bulk commodity: fruit blanching, peel drying, and DMP packaging. Depending on cultivars, hot-water blanching of fruit (65–85 °C) before peeling proved inappropriate for peel color retention, but could even induce enzymatic browning until peel drying, and thus losses of bioactive compounds due to oxidative polymerization and insolubilization. Hence, this process step should be limited to brief washing of the fruit at maximally 65 °C to reduce microbial load. Intermittent microwave-convective drying (IMWC) of MPW0in a continuous belt dryer at high peel throughput was feasible at ambient air temperatures. Finalizing initial IMWC of MPW0by convective drying (CD, 80 °C) in the falling-rate period avoided local charring. Alternatively, MPW0had to be washed before IMWC to remove adherent pulp, but at the expense of soluble solids and β-carotene losses. Unlike the carotenoids, alk(en)ylresorcinols were hardly affected by IMWC. By washing MPW0, quality defects compared to CD-dried peel in terms of antioxidant capacity, water-holding capacity, and yield and quality of pectin were compensated. Adequate preprocessing plus IMWC was thus deemed to be a promising option, especially for biorefinery concepts including biogas production and congeneration. The minimal moisture barrier properties needed for flexible intermediate bulk containers were estimated from an 11-month shelf-life test of IMWC-dried peel in two climate zones. 2018-09-05T03:25:58Z 2018-09-05T03:25:58Z 2017-12-15 Journal 09266690 2-s2.0-85030706917 10.1016/j.indcrop.2017.08.028 https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85030706917&origin=inward http://cmuir.cmu.ac.th/jspui/handle/6653943832/56396
institution Chiang Mai University
building Chiang Mai University Library
country Thailand
collection CMU Intellectual Repository
topic Agricultural and Biological Sciences
spellingShingle Agricultural and Biological Sciences
Andreas Nagel
Sybille Neidhart
Sabine Kuebler (née Wulfkuehler)
Peter Elstner
Tim Anders
Sabine Korhummel
Tanja Sulzer
Stefanie Kienzle
Carina Winkler
Saiko Qadri
Christine Rentschler
Niramol Pholpipattanapong
Jumnong Wuthisomboon
Hans Ulrich Endress
Pittaya Sruamsiri
Reinhold Carle
Applicability of fruit blanching and intermittent microwave-convective belt drying to industrial peel waste of different mango cultivars for the recovery of functional coproducts
description © 2017 Elsevier B.V. To exploit the full potential of industrial mango peel waste (MPW0) as a starting material for the recovery of bioactive and functional coproducts despite its seasonality, it must be processed efficiently into a storable dried byproduct of uniform high quality, irrespective of impacts of different cultivars and ripeness. The focus of this feasibility study, performed on the pilot plant scale, was on technological options for three key process stages in the manufacture of dried mango peel (DMP) as a possible bulk commodity: fruit blanching, peel drying, and DMP packaging. Depending on cultivars, hot-water blanching of fruit (65–85 °C) before peeling proved inappropriate for peel color retention, but could even induce enzymatic browning until peel drying, and thus losses of bioactive compounds due to oxidative polymerization and insolubilization. Hence, this process step should be limited to brief washing of the fruit at maximally 65 °C to reduce microbial load. Intermittent microwave-convective drying (IMWC) of MPW0in a continuous belt dryer at high peel throughput was feasible at ambient air temperatures. Finalizing initial IMWC of MPW0by convective drying (CD, 80 °C) in the falling-rate period avoided local charring. Alternatively, MPW0had to be washed before IMWC to remove adherent pulp, but at the expense of soluble solids and β-carotene losses. Unlike the carotenoids, alk(en)ylresorcinols were hardly affected by IMWC. By washing MPW0, quality defects compared to CD-dried peel in terms of antioxidant capacity, water-holding capacity, and yield and quality of pectin were compensated. Adequate preprocessing plus IMWC was thus deemed to be a promising option, especially for biorefinery concepts including biogas production and congeneration. The minimal moisture barrier properties needed for flexible intermediate bulk containers were estimated from an 11-month shelf-life test of IMWC-dried peel in two climate zones.
format Journal
author Andreas Nagel
Sybille Neidhart
Sabine Kuebler (née Wulfkuehler)
Peter Elstner
Tim Anders
Sabine Korhummel
Tanja Sulzer
Stefanie Kienzle
Carina Winkler
Saiko Qadri
Christine Rentschler
Niramol Pholpipattanapong
Jumnong Wuthisomboon
Hans Ulrich Endress
Pittaya Sruamsiri
Reinhold Carle
author_facet Andreas Nagel
Sybille Neidhart
Sabine Kuebler (née Wulfkuehler)
Peter Elstner
Tim Anders
Sabine Korhummel
Tanja Sulzer
Stefanie Kienzle
Carina Winkler
Saiko Qadri
Christine Rentschler
Niramol Pholpipattanapong
Jumnong Wuthisomboon
Hans Ulrich Endress
Pittaya Sruamsiri
Reinhold Carle
author_sort Andreas Nagel
title Applicability of fruit blanching and intermittent microwave-convective belt drying to industrial peel waste of different mango cultivars for the recovery of functional coproducts
title_short Applicability of fruit blanching and intermittent microwave-convective belt drying to industrial peel waste of different mango cultivars for the recovery of functional coproducts
title_full Applicability of fruit blanching and intermittent microwave-convective belt drying to industrial peel waste of different mango cultivars for the recovery of functional coproducts
title_fullStr Applicability of fruit blanching and intermittent microwave-convective belt drying to industrial peel waste of different mango cultivars for the recovery of functional coproducts
title_full_unstemmed Applicability of fruit blanching and intermittent microwave-convective belt drying to industrial peel waste of different mango cultivars for the recovery of functional coproducts
title_sort applicability of fruit blanching and intermittent microwave-convective belt drying to industrial peel waste of different mango cultivars for the recovery of functional coproducts
publishDate 2018
url https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85030706917&origin=inward
http://cmuir.cmu.ac.th/jspui/handle/6653943832/56396
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