Digital Re-print - January | February 2013

Raising standards to improve profitability with Econase XT Mixer Liquid Application

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Grain & Feed Milling Technology is published six times a year by Perendale Publishers Ltd of the United Kingdom.All data is published in good faith, based on information received, and while every care is taken to prevent inaccuracies, the publishers accept no liability for any errors or omissions or for the consequences of action taken on the basis of information published. ©Copyright 2013 Perendale Publishers Ltd. All rights reserved. No part of this publication may be reproduced in any form or by any means without prior permission of the copyright owner. Printed by Perendale Publishers Ltd. ISSN: 1466-3872

Feed industry use of NSP-enzymes continues to grow throughout the world. NSP enzymes are not

only necessary for reducing viscosity and thus potential problems with litter, but they also improve the nutrition-al value of the complete feed.

Liquid enzyme applicationAB Vista has now developed the Mixer

Liquid Application (MLA) technology for easier handling and application. Econase® XT is the only enzyme currently available on the market which is stable enough to be added at the batch mixer as a liquid product. The enzyme molecule itself is stable to pel-leting temperatures, so stabilising techniques such as coating are not required.

The Econase® XT MLA tech-nology will give users improved in-feed homogeneity and lower CV’s compared with traditional post-pelleting application of liquid enzymes. Trial data indicates a further economic benefit due to the specific energy requirement when pelleting feed produced with Econase® XT liquid added to the mixer. There are two hypotheses for this which are currently being trialed in commercial conditions:

1. The effect of reduced resistance of the feed (enzyme dilution) through the die is due to additional moisture in the feed material as the enzyme is diluted with water.

2. The xylanase starts to work in the mash feed immediately after dosing, improving the gelatinisation of starch during conditioning and thus reducing the resistance through the die.Adding liquids to feeds via the batch

mixer is a well evolved practice, the technol-ogy is well understood and the installation relatively straightforward. The MLA dosing system costs are significantly lower than the

equivalent for post pelleting application. The installation of one MLA system replaces sev-eral PPA systems installed at every press line.

Thermostability in liquid application

The thermo-stability of Econase® XT 25 L was assessed in a commercial feed mill. Five batches of regular corn-based broiler feed without Econase XT 25 L were produced, followed by ten batches of test diet with 100 g/ton addition of Econase® XT 25 L.

Each batch corresponded to six tons of feed produced in a horizontal mixer with application into the mixer following the

same system as other liquid additives were added to the same batch. All batches were conditioned at 90°C and then expanded at 107-110°C for a total time of 30 seconds.

The temperature of the feed was measured immediately after the die, and fluctuated between 94-96°C for all batches. For every batch, representative sam-ples were collected from the mixer under-hopper (mash) and pre- and post-pellet sieving, and sent for xylanase activity analysis. From the fifth batch, ten samples were sent for separate analysis to assess enzyme activity distribution within the batch (homogeneity).

Graph 1: Enzyme activity in mash and pellet samples from ten batches of feed

Raising standards to improve profitability with Econase XT Mixer Liquid Applicationby Paul Steen, engineering services director, AB Vista, United Kingdom

Grain&feed millinG technoloGy22 | January - february 2013

FEATURE

Feed industry use of NSP-enzymes continues to grow throughout the world. NSP enzymes are not

only necessary for reducing viscosity and thus potential problems with litter, but they also improve the nutrition-al value of the complete feed.

Liquid enzyme applicationAB Vista has now developed the Mixer

Liquid Application (MLA) technology for easier handling and application. Econase® XT is the only enzyme currently available on the market which is stable enough to be added at the batch mixer as a liquid product. The enzyme molecule itself is stable to pel-leting temperatures, so stabilising techniques such as coating are not required.

The Econase® XT MLA tech-nology will give users improved in-feed homogeneity and lower CV’s compared with traditional post-pelleting application of liquid enzymes. Trial data indicates a further economic benefit due to the specific energy requirement when pelleting feed produced with Econase® XT liquid added to the mixer. There are two hypotheses for this which are currently being trialed in commercial conditions:

1. The effect of reduced resistance of the feed (enzyme dilution) through the die is due to additional moisture in the feed material as the enzyme is diluted with water.

2. The xylanase starts to work in the mash feed immediately after dosing, improving the gelatinisation of starch during conditioning and thus reducing the resistance through the die.Adding liquids to feeds via the batch

mixer is a well evolved practice, the technol-ogy is well understood and the installation relatively straightforward. The MLA dosing system costs are significantly lower than the

equivalent for post pelleting application. The installation of one MLA system replaces sev-eral PPA systems installed at every press line.

Thermostability in liquid application

The thermo-stability of Econase® XT 25 L was assessed in a commercial feed mill. Five batches of regular corn-based broiler feed without Econase XT 25 L were produced, followed by ten batches of test diet with 100 g/ton addition of Econase® XT 25 L.

Each batch corresponded to six tons of feed produced in a horizontal mixer with application into the mixer following the

same system as other liquid additives were added to the same batch. All batches were conditioned at 90°C and then expanded at 107-110°C for a total time of 30 seconds.

The temperature of the feed was measured immediately after the die, and fluctuated between 94-96°C for all batches. For every batch, representative sam-ples were collected from the mixer under-hopper (mash) and pre- and post-pellet sieving, and sent for xylanase activity analysis. From the fifth batch, ten samples were sent for separate analysis to assess enzyme activity distribution within the batch (homogeneity).

Graph 1: Enzyme activity in mash and pellet samples from ten batches of feed

Raising standards to improve profitability with Econase XT Mixer Liquid Applicationby Paul Steen, engineering services director, AB Vista, United Kingdom

Grain&feed millinG technoloGy22 | January - february 2013

FEATURE

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ConclusionEnzyme activ-

ity in the blank samples (no enzyme added) was below 1000 U/kg in both mash and pellet samples, confirming the low native xyla-nase activity in the feed. When Econase® XT 25 L was added to the ten batches, average recovery in the pellets was 90 percent, when compared with the activity of the mash sample, and 106 per-cent when compared with the expanded activity. Considering the high challenge of the hydrothermal processing conditions (90°C conditioning, followed by 100°C in an expander), these results highlight the outstanding intrinsic thermostability of the Econase® XT molecule. This also confirms the opportunity to add the liquid product directly in the mixer, even when producing pelleted feeds.

Analysis of the ten feed samples from batch five showed a high uniformity, with a CV of five percent in both the mash and

pellet samples. Therefore, in every sample from this batch mixer the aspired enzyme dose was applied.

In conclusion, Econase® XT liquid has a high degree of thermo-stability, and can be applied into the mixer when produc-ing pellet feeds. This should improve application consistency and can allow a reduction in investment costs for liquid application in feed mills with more than one pellet line.

More InforMatIon:Website: www.abvista.com

Graph 2: Uniformity of enzyme activity in ten samples from the fifth batch

"Econase® XT liquid has a high

degree of thermo-stability, and

can be applied into the mixer

when producing pellet feeds"

Grain&feed millinG technoloGy January - february 2013 | 23

RAISING STANDARDS

Now with

MLA technology

Raise your standards of performance with Econase® XT and Mixer Liquid Application.

Looking for improved profitability in uncertain times?

Econase® XT Mixer Liquid Application technology optimises production and feed efficiency, offering you significant cost savings.

The only liquid NSP enzyme stable enough to add prior to pelleting.

• Improved FCR • Consistent in-feed homogeneity • Can reduce power consumption when pelleting

Econase® XT from AB Vista – the leaders in enzyme innovation.

Find out more: E: econasext@abvista.com T: +44 (0)1672 517664 W: abvista.com

Performance, flexibility and stability

WELCOME TO THE TWENTY FIRST EDITION OF THE INTERNATIONAL MILLING DIRECTORY

Thepremierresourcefortheglobalfeedandflourmillingindustries

FEATURE

ConclusionEnzyme activ-

ity in the blank samples (no enzyme added) was below 1000 U/kg in both mash and pellet samples, confirming the low native xyla-nase activity in the feed. When Econase® XT 25 L was added to the ten batches, average recovery in the pellets was 90 percent, when compared with the activity of the mash sample, and 106 per-cent when compared with the expanded activity. Considering the high challenge of the hydrothermal processing conditions (90°C conditioning, followed by 100°C in an expander), these results highlight the outstanding intrinsic thermostability of the Econase® XT molecule. This also confirms the opportunity to add the liquid product directly in the mixer, even when producing pelleted feeds.

Analysis of the ten feed samples from batch five showed a high uniformity, with a CV of five percent in both the mash and

pellet samples. Therefore, in every sample from this batch mixer the aspired enzyme dose was applied.

In conclusion, Econase® XT liquid has a high degree of thermo-stability, and can be applied into the mixer when produc-ing pellet feeds. This should improve application consistency and can allow a reduction in investment costs for liquid application in feed mills with more than one pellet line.

More InforMatIon:Website: www.abvista.com

Graph 2: Uniformity of enzyme activity in ten samples from the fifth batch

"Econase® XT liquid has a high

degree of thermo-stability, and

can be applied into the mixer

when producing pellet feeds"

Grain&feed millinG technoloGy January - february 2013 | 23

RAISING STANDARDS

Now with

MLA technology

Raise your standards of performance with Econase® XT and Mixer Liquid Application.

Looking for improved profitability in uncertain times?

Econase® XT Mixer Liquid Application technology optimises production and feed efficiency, offering you significant cost savings.

The only liquid NSP enzyme stable enough to add prior to pelleting.

• Improved FCR • Consistent in-feed homogeneity • Can reduce power consumption when pelleting

Econase® XT from AB Vista – the leaders in enzyme innovation.

Find out more: E: econasext@abvista.com T: +44 (0)1672 517664 W: abvista.com

Performance, flexibility and stability

WELCOME TO THE TWENTY FIRST EDITION OF THE INTERNATIONAL MILLING DIRECTORY

Thepremierresourcefortheglobalfeedandflourmillingindustries

FEATURE

www.gfmt.co.uk

LINKS• Seethefullissue• VisittheGFMTwebsite

• ContacttheGFMTTeam

• SubscribetoGFMT

A subscription magazine for the global flour & feed milling industries - first published in 1891INCORPORATING PORTS, DISTRIBUTION AND FORMULATION

In this issue:

• Efficient barge unloading technology

• Feed enzymes in animal nutrition

• Controlling the explosion risks within hammer mills

• Use of computer programming in animal diet formulation

• Recycling surplus factory food into quality animal feeds

Janu

ary

- Feb

ruar

y 20

13

first published in 1891

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