Effects of water configuration (form) in beef loins on color, tenderness, and electrical conductivity
Date
2020-05
Authors
Mesquita, Carolina S.
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Abstract
In this thesis, beef strip loins were used to study about the effects of apparent water
configurations (free, immobilized, and bound) on color, electrical conductivity, and
tenderness. These variables contribute to consumer sensory attributes that effect quality
factors in beef consumption. Color variables (n = 36) tested involved chroma, hue, L*,
a*, and b* to determine correlation across fresh strip loins. The Pearson correlation data
demonstrated a correlation at (P < 0.0001) between chroma, hue, L*, a*, and b* across all
loins. Further analysis displayed similar conclusions to contain a significant difference.
Beef jerky (n = 72), cooked, and fresh strip loins (n = 36) were evaluated for data
analysis using electrical conductivity measurements (ECM). Beef jerky determinations
displayed high electrical conductivity (EC) with (SEM = 5.05), and ECM was
inconclusive based on ingredients listed (food additives). Cooked strip loins, across strip
loins, resulted in low ECM (P = 0.37) indicated no significant difference. Fresh strip loins
were compared among strip loins and indicated a trend (P < 0.078). Both fresh and
cooked strip loins were compared, and ECM showed a three-fold increase across loin
types (P < 0.0001). Tenderness (n = 216) was different (P < 0.0001) across strip loins. All
data were collected on one source of beef strip loins that came from different animals.
Data analyses were conducted through SAS software using Pearson correlations and
ANOVA to determine correlation and comparison across strip loins. Results of these
experiments show that there are correlations between EC and color of fresh beef loins,
and between EC and tenderness of cooked beef loins.
Description
Keywords
Color, Tenderness, Electrical conductivity, Beef loins
Citation
Mesquita, C. S. (2020). <i>Effects of water configuration (form) in beef loins on color, tenderness, and electrical conductivity</i> (Unpublished thesis). Texas State University, San Marcos, Texas.