The use of modified atmosphere to control malt quality

Annika Wilhelmson, Arvi Vilpola, E. Räsänen, P. Peltola, E. Kotaviita, Silja Home, Arja Laitila

Research output: Contribution to journalArticleScientificpeer-review

Abstract

In industrial malting, the temperature of the grain bed is difficult to control during the air-rest periods in steeping, and high temperatures during steeping may lead to high malting losses and impaired malt quality. Nitrogen gas was applied during air rest with the aim of controlling heat production in pilot-scale malting. This procedure was compared to air recirculation and continuous aeration. Nitrogen gas efficiently restricted heat formation and had a negligible effect on malt quality, although it did delay germination. In addition, nitrogen gas was applied at the beginning of kilning to suppress fungal growth and improve malt quality. When nitrogen gas was applied during kilning, Fusarium levels and lipoxygenase activity in malt decreased significantly, whereas endopeptidase and limit dextrinase activities increased. Based on these results, the application of nitrogen gas during malting offers a potential means of tailoring malt quality.
Original languageEnglish
Pages (from-to)245 - 252
Number of pages8
JournalMBAA Technical Quarterly
Volume45
Issue number3
DOIs
Publication statusPublished - 2008
MoE publication typeA1 Journal article-refereed

Fingerprint

malt
malting
gases
nitrogen
soaking
air
limit dextrinase
heat production
lipoxygenase
aeration
Fusarium
microbial growth
temperature
proteinases
germination
heat

Keywords

  • enzymes
  • Fusarium
  • kilning
  • malting
  • nitrogen
  • steeping

Cite this

Wilhelmson, A., Vilpola, A., Räsänen, E., Peltola, P., Kotaviita, E., Home, S., & Laitila, A. (2008). The use of modified atmosphere to control malt quality. MBAA Technical Quarterly, 45(3), 245 - 252. https://doi.org/10.1094/TQ-45-3-0245
Wilhelmson, Annika ; Vilpola, Arvi ; Räsänen, E. ; Peltola, P. ; Kotaviita, E. ; Home, Silja ; Laitila, Arja. / The use of modified atmosphere to control malt quality. In: MBAA Technical Quarterly. 2008 ; Vol. 45, No. 3. pp. 245 - 252.
@article{2ed8f6884d3b488f9ddcf39f180a9420,
title = "The use of modified atmosphere to control malt quality",
abstract = "In industrial malting, the temperature of the grain bed is difficult to control during the air-rest periods in steeping, and high temperatures during steeping may lead to high malting losses and impaired malt quality. Nitrogen gas was applied during air rest with the aim of controlling heat production in pilot-scale malting. This procedure was compared to air recirculation and continuous aeration. Nitrogen gas efficiently restricted heat formation and had a negligible effect on malt quality, although it did delay germination. In addition, nitrogen gas was applied at the beginning of kilning to suppress fungal growth and improve malt quality. When nitrogen gas was applied during kilning, Fusarium levels and lipoxygenase activity in malt decreased significantly, whereas endopeptidase and limit dextrinase activities increased. Based on these results, the application of nitrogen gas during malting offers a potential means of tailoring malt quality.",
keywords = "enzymes, Fusarium, kilning, malting, nitrogen, steeping",
author = "Annika Wilhelmson and Arvi Vilpola and E. R{\"a}s{\"a}nen and P. Peltola and E. Kotaviita and Silja Home and Arja Laitila",
year = "2008",
doi = "10.1094/TQ-45-3-0245",
language = "English",
volume = "45",
pages = "245 -- 252",
journal = "MBAA Technical Quarterly",
issn = "0743-9407",
number = "3",

}

Wilhelmson, A, Vilpola, A, Räsänen, E, Peltola, P, Kotaviita, E, Home, S & Laitila, A 2008, 'The use of modified atmosphere to control malt quality', MBAA Technical Quarterly, vol. 45, no. 3, pp. 245 - 252. https://doi.org/10.1094/TQ-45-3-0245

The use of modified atmosphere to control malt quality. / Wilhelmson, Annika; Vilpola, Arvi; Räsänen, E.; Peltola, P.; Kotaviita, E.; Home, Silja; Laitila, Arja.

In: MBAA Technical Quarterly, Vol. 45, No. 3, 2008, p. 245 - 252.

Research output: Contribution to journalArticleScientificpeer-review

TY - JOUR

T1 - The use of modified atmosphere to control malt quality

AU - Wilhelmson, Annika

AU - Vilpola, Arvi

AU - Räsänen, E.

AU - Peltola, P.

AU - Kotaviita, E.

AU - Home, Silja

AU - Laitila, Arja

PY - 2008

Y1 - 2008

N2 - In industrial malting, the temperature of the grain bed is difficult to control during the air-rest periods in steeping, and high temperatures during steeping may lead to high malting losses and impaired malt quality. Nitrogen gas was applied during air rest with the aim of controlling heat production in pilot-scale malting. This procedure was compared to air recirculation and continuous aeration. Nitrogen gas efficiently restricted heat formation and had a negligible effect on malt quality, although it did delay germination. In addition, nitrogen gas was applied at the beginning of kilning to suppress fungal growth and improve malt quality. When nitrogen gas was applied during kilning, Fusarium levels and lipoxygenase activity in malt decreased significantly, whereas endopeptidase and limit dextrinase activities increased. Based on these results, the application of nitrogen gas during malting offers a potential means of tailoring malt quality.

AB - In industrial malting, the temperature of the grain bed is difficult to control during the air-rest periods in steeping, and high temperatures during steeping may lead to high malting losses and impaired malt quality. Nitrogen gas was applied during air rest with the aim of controlling heat production in pilot-scale malting. This procedure was compared to air recirculation and continuous aeration. Nitrogen gas efficiently restricted heat formation and had a negligible effect on malt quality, although it did delay germination. In addition, nitrogen gas was applied at the beginning of kilning to suppress fungal growth and improve malt quality. When nitrogen gas was applied during kilning, Fusarium levels and lipoxygenase activity in malt decreased significantly, whereas endopeptidase and limit dextrinase activities increased. Based on these results, the application of nitrogen gas during malting offers a potential means of tailoring malt quality.

KW - enzymes

KW - Fusarium

KW - kilning

KW - malting

KW - nitrogen

KW - steeping

U2 - 10.1094/TQ-45-3-0245

DO - 10.1094/TQ-45-3-0245

M3 - Article

VL - 45

SP - 245

EP - 252

JO - MBAA Technical Quarterly

JF - MBAA Technical Quarterly

SN - 0743-9407

IS - 3

ER -

Wilhelmson A, Vilpola A, Räsänen E, Peltola P, Kotaviita E, Home S et al. The use of modified atmosphere to control malt quality. MBAA Technical Quarterly. 2008;45(3):245 - 252. https://doi.org/10.1094/TQ-45-3-0245