This study was undertaken to investigate the variation in
the total sugar and acid content of the frozen Marshall strawberries
grown in different areas of the Pacific Northwest.
The samples used in this study were collected from different
freezing plants located in the states of Oregon and Washington during
the 1949 strawberry season. Forty-four samples of Marshall strawberries
were analyzed.
For total sugar determinations a modification of the Shaffer
and Somogyi method was used. The average value found for total sugar
was 7.56 per cent. The glass electrode was used for the determination
of total acidity. The average value found for total acidity was 0.99
per cent. Soluble solids determined by the Bausch and Lomb hand
refractometer had an average value of 9.90 per cent. The average pH
value for all samples was 3.36.
The sugar and acid content of these Marshall strawberries
showed most frequent distribution in the range from 7.1 to 9.0 per
cent and 0.91 to 1.1 per cent, respectively. Soluble solids were most
frequent in the range from 8.1 to 11.0 per cent.
No relationship was found for total sugar and acid content.
Soluble solids were found to have a definite relationship with total
sugar content.
Marshall strawberries grown in different areas of Oregon
varied in total sugar and acid content. Generally, strawberries grown
in warm areas and mature berries tend to have a higher sugar content.
Berries grown on the hillsides and less mature berries tend to have a
lower sugar content. The weather conditions apparently affect the
sugar and acid content of Marshall strawberries greatly. / Graduation date: 1951
| Identifer | oai:union.ndltd.org:ORGSU/oai:ir.library.oregonstate.edu:1957/28285 |
| Date | 10 May 1951 |
| Creators | Yao, Ka-Teng |
| Contributors | Niven, Thomas B. |
| Source Sets | Oregon State University |
| Language | en_US |
| Detected Language | English |
| Type | Thesis/Dissertation |
Page generated in 0.0015 seconds