PMID- 19464168
OWN - NLM
STAT- MEDLINE
DCOM- 20090820
LR  - 20090608
IS  - 1873-2976 (Electronic)
IS  - 0960-8524 (Linking)
VI  - 100
IP  - 19
DP  - 2009 Oct
TI  - Effects of particle size distribution, compositional and color properties of 
      ground corn on quality of distillers dried grains with solubles (DDGS).
PG  - 4433-40
LID - 10.1016/j.biortech.2009.02.067 [doi]
AB  - Oftentimes, corn processors believe that ground corn (raw material) and 
      distillers dried grains with solubles (DDGS) are interrelated in certain quality 
      parameters. Yet, previous studies, although rather limited, have not established 
      this relationship. In this study, six ground corn samples and their resulting 
      DDGS were analyzed for particle size distribution (PSD), using a series of six 
      selected US standard sieves: Nos. 8, 12, 18, 35, 60, and 100, and a pan. The 
      original sample and sieve sized fractions were measured for contents of moisture, 
      protein, oil, ash and starch, and surface color. Total carbohydrate (CHO) and 
      total non-starch CHO were also calculated. Results show that the geometric mean 
      diameter (d(gw)) of particles varied with individual corn and DDGS samples, and 
      that d(gw) of DDGS was larger than that of corn (0.696 vs. 0.479 mm, average 
      values), indicating that during conversion of corn to DDGS, certain particles 
      became enlarged. For d(gw) and mass frequency of individual particle size 
      classes, the relationship between ground corn and DDGS varied, but PSD of the 
      whole sample was well correlated between them (r=0.807). Upon conversion from 
      corn to DDGS, on an average, protein was concentrated 3.59 times; oil, 3.40 
      times; ash, 3.32 times; and total non-starch CHO, 2.89 times. There were some 
      positive correlations in contents of protein and non-starch CHO and in L value 
      between corn and DDGS. Yet, variations in nutrients and color attributes were 
      larger in DDGS than in corn. For either corn or DDGS, these variations were 
      larger in sieved fractions than in the whole fraction. Raw material, processing 
      method and addition of yeasts are among major factors considered for causing 
      larger variations in these attributes among DDGS. The study partially supports 
      the common belief by processors that quality attributes of corn affect those of 
      DDGS.
FAU - Liu, KeShun
AU  - Liu K
AD  - Grain Chemistry and Utilization Laboratory, National Small Grains and Potato 
      Germplasm Research Unit, USDA-ARS, Aberdeen, ID 83210, United States. 
      Keshun.Liu@ars.usda.gov
LA  - eng
PT  - Journal Article
DEP - 20090521
PL  - England
TA  - Bioresour Technol
JT  - Bioresource technology
JID - 9889523
RN  - 0 (Plant Oils)
RN  - 0 (Plant Proteins)
RN  - 9005-25-8 (Starch)
SB  - IM
MH  - *Particle Size
MH  - *Pigmentation
MH  - Plant Oils/chemistry
MH  - Plant Proteins/chemistry
MH  - Seeds/*chemistry
MH  - Solubility
MH  - Starch/chemistry
MH  - Surface Properties
MH  - Zea mays/*chemistry
EDAT- 2009/05/26 09:00
MHDA- 2009/08/21 09:00
CRDT- 2009/05/26 09:00
PHST- 2008/08/25 00:00 [received]
PHST- 2009/02/24 00:00 [revised]
PHST- 2009/02/26 00:00 [accepted]
PHST- 2009/05/26 09:00 [entrez]
PHST- 2009/05/26 09:00 [pubmed]
PHST- 2009/08/21 09:00 [medline]
AID - S0960-8524(09)00441-6 [pii]
AID - 10.1016/j.biortech.2009.02.067 [doi]
PST - ppublish
SO  - Bioresour Technol. 2009 Oct;100(19):4433-40. doi: 10.1016/j.biortech.2009.02.067. 
      Epub 2009 May 21.