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 nutritional value of the complete feed.
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Digital Re-print - January | February 2013
Raising standards to improve profitability with Econase XT Mixer Liquid Application
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
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.
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.
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