Abstract/Details

Physicochemical and sensory properties of autumnberry and application in bread


2009 2009

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Abstract (summary)

Autumnberry is a low-cost underutilized fruit with potential for highly valuable antioxidant/nutraceutical applications. Spectrophotometric and Oxygen Radical Absorbance capacity (ORACFL) methods were used to test the lycopene content and ORAC-value of both pureed and freeze-dried autumnberry (in dried weight): 2.90±0.04 mg/g lycopene and 144.14±4.86 μmol TE/g ORAC-value, and after freeze-drying, 0.70±0.00 mg/g lycopene and 102.26±3.27 μmol TE/g ORAC-value. A sensory trained panel (n=12) participated in descriptive analysis to evaluate freeze-dried autumnberry fortified bread at 0%, 3%, 6%, and 9% levels. A general linear mixed model was fitted using the mixed procedure of SAS. At p<0.05, the significant differences were detected among all breads in term of crumb color and autumnberry flavor, but not in yeasty flavor. The significant differences in crust color and firmness were detected at 6% and 9% level; and at 0% and 9% for crumb cell uniformity. The 3%-fortified bread was preferred and the closest to the control in terms of flavor and physical characteristics. The Principal Component Analysis (PCA) demonstrated that the bread control had distinct yeasty flavor, while the 9% fortified bread was strongly related to crumb cell uniformity. Lycopene in autumnberry appeared to be easily degraded by freeze-drying (75.86%) and only small quantity retained after baking (7-9%).

Indexing (details)


Subject
Agronomy
Classification
0359: Agronomy
Identifier / keyword
Biological sciences
Title
Physicochemical and sensory properties of autumnberry and application in bread
Author
Tanojo, Aileen Diana
Number of pages
137
Publication year
2009
Degree date
2009
School code
0128
Source
MAI 48/02M, Masters Abstracts International
Place of publication
Ann Arbor
Country of publication
United States
ISBN
9781109420876
Advisor
Dolan, Kirk
University/institution
Michigan State University
University location
United States -- Michigan
Degree
M.S.
Source type
Dissertations & Theses
Language
English
Document type
Dissertation/Thesis
Dissertation/thesis number
1471891
ProQuest document ID
304937961
Copyright
Database copyright ProQuest LLC; ProQuest does not claim copyright in the individual underlying works.
Document URL
http://search.proquest.com/docview/304937961
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