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.

1. Digital Re-print -
January | February 2013
Raising standards to improve profitability with
Econase XT Mixer Liquid Application
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2. FEATURE
Raising standards to improve
profitability with Econase XT
Mixer Liquid Application
by Paul Steen, engineering services director, AB Vista, United Kingdom
F
eed industry use of NSP-enzymes 1. The effect of reduced resistance of the equivalent for post pelleting application. The
continues to grow throughout feed (enzyme dilution) through the die installation of one MLA system replaces sev-
the world. NSP enzymes are not is due to additional moisture in the feed eral PPA systems installed at every press line.
only necessary for reducing viscosity material as the enzyme is diluted with
and thus potential problems with litter, water. Thermostability in liquid
but they also improve the nutrition- 2. The xylanase starts to work in the application
al value of the complete feed. mash feed immediately after dosing, The thermo-stability of Econase® XT 25 L
improving the gelatinisation of starchwas assessed in a commercial feed mill. Five
during conditioning and thus reducing batches of regular corn-based broiler feed
Liquid enzyme application the resistance through the die. without Econase XT 25 L were produced,
AB Vista has now developed the Mixer Adding liquids to feeds via the batch followed by ten batches of test diet with 100
Liquid Application (MLA) technology for mixer is a well evolved practice, the technol-
g/ton addition of Econase® XT 25 L.
easier handling and application. Econase® ogy is well understood and the installation Each batch corresponded to six tons of
XT is the only enzyme currently available relatively straightforward. The MLA dosingfeed produced in a horizontal mixer with
on the market which is stable enough to system costs are significantly lower than the
application into the mixer following the
be added at the batch mixer as same system as other liquid
a liquid product. The enzyme additives were added to the
molecule itself is stable to pel- same batch. All batches were
leting temperatures, so stabilising conditioned at 90°C and then
techniques such as coating are expanded at 107-110°C for a
not required. total time of 30 seconds.
The Econase® XT MLA tech- The temperature of the feed
nology will give users improved was measured immediately after
in-feed homogeneity and lower the die, and fluctuated between
CV’s compared with traditional 94-96°C for all batches. For
post-pelleting application of liquid every batch, representative sam-
enzymes. Trial data indicates a ples were collected from the
further economic benefit due to mixer under-hopper (mash) and
the specific energy requirement pre- and post-pellet sieving, and
when pelleting feed produced with sent for xylanase activity analysis.
Econase® XT liquid added to the From the fifth batch, ten samples
mixer. There are two hypotheses Graph 1: Enzyme activity in mash and pellet samples from were sent for separate analysis to
for this which are currently being ten batches of feed assess enzyme activity distribution
trialed in commercial conditions: within the batch (homogeneity).
22 | January - february 2013 Grain &feed millinG technoloGy

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4. FEATURE
Conclusion
Enzyme 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 Graph 2: Uniformity of enzyme activity in ten samples from
the ten batches, the fifth batch
average recovery
in the pellets was
90 percent, when compared with the pellet samples. Therefore, in every sample
activity of the mash sample, and 106 per- from this batch mixer the aspired enzyme
cent when compared with the expanded dose was applied.
activity. Considering the high challenge of In conclusion, Econase® XT liquid has
the hydrothermal processing conditions a high degree of thermo-stability, and can
(90°C conditioning, followed by 100°C in be applied into the mixer when produc-
"Econase XT liquid has a high
® an expander), these results highlight the ing pellet feeds. This should improve
outstanding intrinsic thermostability of the application consistency and can allow a
Econase® XT molecule. This also confirms reduction in investment costs for liquid
degree of thermo-stability, and the opportunity to add the liquid product application in feed mills with more than
directly in the mixer, even when producing one pellet line.
can be applied into the mixer pelleted feeds.
Analysis of the ten feed samples from
when producing pellet feeds" batch five showed a high uniformity, with More InforMatIon:
a CV of five percent in both the mash and Website: www.abvista.com
M
N t ec
LA
ow h
Performance,
w olo
ith g
flexibility and stability
n
WELCOME TO THE TWENTY FIRST EDITION y
OF THE INTERNATIONAL MILLING DIRECTORY
The premier resource for the global feed and fl our milling industries
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
RAISING STANDARDS
Grain &feed millinG technoloGy January - february 2013 | 23

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