Abstract
Lyckeby Starch AB is a farmer-owned company that produces products based on potato starch. In order to increase their production efficiency and their international competitiveness the company is investigating the possibilities of keeping their factories open longer. To achieve this, potato has to be stored for a longer period of time than what is practiced today. Starch potato is usually stored in large piles covered by straw and plastic, either in the field or on the farmyard. The objective was to examine in what way starch yield (starch content*tuber weight) in three different potato varieties was affected by storage in two different types of storage piles. The potato was stored for three months in total and starch content and tuber weight were controlled throughout the period. Stored tubers were also visually examined and prescense of mechanical damage as well as wet rots and dry rots was recorded. Bacteria and fungi were isolated and identified. In general, varietal differences were greater than differences between the storage piles. Loss of starch yield was greatest during the first weeks of storage, and there was a strong correlation between presence of mechanical damage on tubers and incidence of wet rots and dry rots. Several bacteria and fungi were identified and there was a tendency of difference in bacterial diversity between the different potato varieties, which indicates that the different varieties select for different bacterial species. In order to minimize the loss of starch yield during storage it is important to choose good potato varieties and to harvest them at the right time and under appropriate circumstances in order to avoid mechanical damage
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Claims 4
Claim · model-written summary
Varietal differences exceeded storage pile differences.
- Taxon
- Potato
Solanum tuberosumt0 - Outcome
- varietal differencese0
- Direction
- greatere0
- Comparator
- differences between the storage pilese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“varietal differences were greater than differences between the storage piles”
t0“Potato”
Claim · model-written summary
Starch yield loss was greatest during the first storage weeks.
- Taxon
- PotatoSolanum tuberosumt0
- Outcome
- Loss of starch yielde0
- Direction
- greateste0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Loss of starch yield was greatest during the first weeks of storage”
t0“Potato”
Claim · model-written summary
Mechanical tuber damage strongly correlated with wet and dry rots.
- Taxon
- PotatoSolanum tuberosumt0
- Organ / stage
- tuberse0
- Outcome
- incidence of wet rots and dry rotse0
- Qualifier
- strong correlatione0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“strong correlation between presence of mechanical damage on tubers and incidence of wet rots and dry rots”
t0“Potato”
Claim · model-written summary
Bacterial diversity tended to differ between potato varieties.
- Taxon
- potatoSolanum tuberosume0
- Outcome
- bacterial diversitye0
- Qualifier
- tendency of differencee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“there was a tendency of difference in bacterial diversity between the different potato varieties”