A Rapid Small Scale Method for the Determination of Malt Extract

Fox, Glen; Henry, Robert J.

doi:10.1002/j.2050-0416.1993.tb01150.x

Cited by 8 publications

(4 citation statements)

References 25 publications

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“…High levels of HWE are desirable as it provides an indication of malt quality as well as potential brewhouse performance 24 . Studies have shown the expression of this trait was controlled by genotype and environment 4,23,49,53,68,70,79 and processing 12,47,67,69 .…”

Section: Introductionmentioning

confidence: 99%

Is Malting Barley Better Feed for Cattle than Feed Barley?

Fox

Kelly²,

Bowman

et al. 2009

Journal of the Institute of Brewing

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Barley grain from a combined intermediate and advanced barley breeding trial was assessed for grain, feed and malt quality from two sites over two consecutive years, with the objective to ascertain relationships between these traits. Results indicated there were genetic effects for both malt (hot water extract and friability) and "feed" traits (as measured by hardness, acid detergent fibre, starch and in-sacco dry matter digestibility). The feed trait values were generally independent of the malt trait values. However, there were positive relationships between friability, hardness and protein, as well as a negative relationship between extract and husk. Extract also had a positive relationship with test weight but appeared to be independent from the feed traits. Test weight also showed little relationship to the feed traits. Heritability values ranged from low to high for almost all traits. This study details where both malt and cattle feed parameters have been compared and the results indicated that while malt and feed traits do not correlate directly, malt cultivars can exhibit excellent feed characteristics, equal to or better than feed cultivars. This data highlights the benefit of selecting for malt quality even if a breeding program would be interested at targeting specific feed quality.

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Section: Introductionmentioning

confidence: 99%

Is Malting Barley Better Feed for Cattle than Feed Barley?

Fox

Kelly²,

Bowman

et al. 2009

Journal of the Institute of Brewing

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“…The rootlets were manually removed. Malt extract was determined using the method described by Fox & Henry (1993) with some modifications. A total of 12 ml (approach by weighing) of distilled water at 65 °C was added to 3 g of ground malt passed through a 0.5 mm sieve.…”

Section: Methodsmentioning

confidence: 99%

Barley yield and malt quality affected by fall and spring planting under rainfed conditions

Saygili¹

2023

PeerJ

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Background As a result of the changing climate characteristics, it is necessary to reevaluate the planting time for crop plants. The aim of the present study was to determine the quality characteristics of malting barley cultivars in fall and spring plantings. Methods Sixteen malting barley cultivars were used. Two fall-planted and two spring-planted trials were conducted in two consecutive years. The field trials were carried out in a randomized complete block design with four replications in Tokat province of Turkey under rainfed conditions. Results Grain yields varied between 4.38 and 5.71 t/ha in fall-planted trials and between 3.12 and 4.89 t/ha in spring-planted trials. Malt extracts were between 77.0% and 78.0% kg in fall-planted trials and between 73.9% and 76.9% in spring-planted trials. Alpha amylase activities ranged from 77.9 to 81.4 Ceralpha unit (CU)/g in fall-planted trials and from 80.8 to 100.9 CU/g in spring-planted trials. Diastatic power ranged from 194.5 to 331.1 Windisch-Kolbach unit (°WK) in fall-planted trials and from 129.0 to 259.8 °WK in spring-planted trials. GGE biplot analysis indicated that winter barley cultivar Durusu and facultative barley cultivar Ince-04 were the best with consistent grain yields while Ince-04 was the best with stable malt extract across the trials. In scatter plot graphics, winter barley cultivars Durusu, Aydanhanim, Yildiz and facultative Ince-04 had superior performance in fall-plantings for grain yield and malt extract. In spring planting, facultative Ince-04 had higher performance than those of other cultivars. In spring plantings, facultative or winter barley cultivars that do not have strong vernalization requirement had better yield and malt quality. Appropriate planting time and cultivars can allow a better use of available water in malt barley production under rainfed conditions. Lastly, instead of evaluating the grain yield or malt quality alone, it would be best to evaluate the target product (malt extract percentage) obtained from a particular region, process, or production methodology.

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“…This parameter (malt extract, fine extract, HWE) is determined by laboratories in malthouses, breweries, and breeding programs across the world and is calculated as the amount of extract a malting cultivar can yield. 8,9 Malt extract is of crucial economic importance, because it determines the amount of beer that can be produced and as a consequence is one of the main parameters used in breeding programs in order to develop varieties with high malt quality characteristics and is considered one of the most important quality parameter for purchasing malt. 3,7−9 It is well recognized that in good malting quality cultivars, most of the starchy endosperm is converted into water extract with low viscosity.…”

Section: ■ Introductionmentioning

confidence: 99%

“…Improving malt quality is one of the key objectives in many barley breeding programs where malt extract, usually reported as hot water extract (HWE), is considered the main quality characteristic. This parameter (malt extract, fine extract, HWE) is determined by laboratories in malthouses, breweries, and breeding programs across the world and is calculated as the amount of extract a malting cultivar can yield. , Malt extract is of crucial economic importance, because it determines the amount of beer that can be produced and as a consequence is one of the main parameters used in breeding programs in order to develop varieties with high malt quality characteristics and is considered one of the most important quality parameter for purchasing malt. ,− …”

Section: Introductionmentioning

confidence: 99%

A Novel Approach to Monitor the Hydrolysis of Barley (Hordeum vulgare L) Malt: A Chemometrics Approach

Cozzolino

Degner

Eglinton

2014

J. Agric. Food Chem.

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Malting barley is a process that has been profusely studied and is known to be influenced by several physical and biochemical properties of the grain. In particular, the amount of material that can be extracted from the malt (malt extract) is an important measure of brewing performance and end quality. The objectives of this study were (a) to compare the time course of hydrolysis of different malting barley (Hordeum vulgare L) varieties and (b) to evaluate the usefulness of mid-infrared (MIR) spectroscopy as high-throughput method to monitor malt hydrolysis. Differences in the pattern of hydrolysis were observed between the malt samples analyzed where samples from the same variety that have similar hot water extract (HWE) values tend to have the same pattern of hydrolysis. Principal component score plots based on the MIR spectra showed similar results. Partial least-squares discriminate analysis (PLS-DA) was used to classify malt samples according to their corresponding variety and time course of hydrolysis. The coefficient of determination (R(2)) and the standard error of cross validation (SECV) obtained for the prediction of variety and time course of hydrolysis were 0.67 (1.01) and 0.38 (19.90), respectively. These differences might be the result of the different composition in sugars between the barley varieties analyzed after malting, measured as wort density and not observed when only the HWE value at the end point is reported. This method offers the possibility to measure several parameters in malt simultaneously, reducing the time of analysis as well as requiring minimal sample preparation.

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A Rapid Small Scale Method for the Determination of Malt Extract

Cited by 8 publications

References 25 publications

Is Malting Barley Better Feed for Cattle than Feed Barley?

Is Malting Barley Better Feed for Cattle than Feed Barley?

Barley yield and malt quality affected by fall and spring planting under rainfed conditions

A Novel Approach to Monitor the Hydrolysis of Barley (Hordeum vulgare L) Malt: A Chemometrics Approach

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