The major objective of the Sensory Science Laboratory is to support the ongoing enology and viticulture research by providing a means of evaluating juices and wines. For example, if a new viticultural practice is being tested, it is important to document how this practice changes the character of the wine....
Sensory evaluation is a scientific discipline involved in evoking, measuring, analyzing, and interpreting responses to properties of foods and materials as perceived by sight, smell, taste, touch and hearing. Historically, sensory evaluation test methods have been divided into two basic types, affective and discriminative. Affective tests involve acceptance tests, usually...
The effect of refluxing on the aromas of Valencia aqueous orange essences was
determined through analysis by GC, MS, Osme, and by a descriptive panel. The strengths
and descriptions of volatiles were investigated to determine if differences in essence aroma
character and intensity existed. During production, 1 sample was subjected...
Malt, wort and beer samples representing a single
pilot brew were extracted from Celite columns with Freon
114. Total extracts were analyzed by gas
chromatography/mass spectrometry. Compounds were
identified that were unique or common to beer, wort or
malt and quantities present were determined for those
common to the three...
A lexicon describing the sensory perception of carbonated water was
developed. Temporal aspects and differing ingestion conditions were
investigated for Bite and Burn sensation using time-intensity (T-I). Four CO₂
levels (0, 1.7, 2.8, and 4.6 volumes) at 3°C and 10°C were tested. Trained
panelists used a 16-pt category scale for...
Acidulants can contribute considerably to the flavor of food.
However, limited research on differences in acid flavor exists. While
numerous researchers have studied acids, most have focused on sourness
exclusively. Acids have been shown previously to differ in non-sour
components, such as bitterness and astringency. A series of experiments
were...
The taste qualities of acidulants have not been studied in detail despite
the fact that they are widely used by the food industry. Studies on
characterizing the sensory properties of organic and inorganic acids are very
limited. Reported studies are commonly on threshold, equi-sour and the time
intensity values of...
Lemon oil quality is affected by numerous factors including lemon variety, climate,
soil type, extraction method, etc.. Therefore, quality largely depends upon the lemons'
origin, and aroma profiles of oils obtained throughout the world have potential to vary
considerably. This research was conducted to identify differences in the aroma profiles...
The effect of sweeteners on fruit flavor perception was studied
through the use of fruitiness power functions for unsweetened and
sweetened model systems. In the first part of the study, two
isosweet concentrations of aspartame and sucrose were determined
and combined with five concentrations of orange and strawberry
flavorants. Fruitiness...