Job offersmore »
- Product Manager Biostimulants - Westmaas, the Netherlands
- Corporate Grower - Camarillo (CA), USA
- General Manager China - Kunming, China
- Buyer greenhouse crops - Almeria, Spain
- Trucking Fleet Manager - Azerbaijan
- Fresh Produce Traders Required for a Leading Dutch/UK Fresh Produce Business
- Key Accountmanager Horticulture Glass
- Product & Applicatie Specialist Opkweek
- Assistant Grower - Canada
- Experienced International Buyer/Seller Germany
Top 5 - yesterday
- Excellent EU grape market – if only the grapes can get there
- Winter storm Benji dusts southern US and Mexico with rare snow
- Challenges and opportunities for Colombia's banana sector
- California growers set out to fully assess wildfire damage
- Morocco: Strawberry acreage grows from 10 to 3,660 hectares in 27 years
Top 5 - last week
Top 5 - last month
- Amazon: Steeper price cuts at Whole Foods Market
- Year-round produce for Canada’s most northern communities
- BILLA Online Shop: over 50% of the online shopping baskets contain fresh products
- South Australia agricultural exports have increased due to new airlines
- Turkish tomato exports shot up 46% in October
Exchange ratesmore »
Study of microstructural and thermal properties of 21 potato varieties
Technicians from the University of Naples Federico II studied the characteristics of tuber starch, the chemical-thermal properties of 21 potato varieties (Actrice, Adora, Arielle, Arizona, Asterix, Bellini, Berber, Colomba, Crisper, Fontana, Inova, Laura, Marlene, Red Scarlet, Safrane, Sinora, Soprano, Triplo, Universa, Vivaldi e Volumia) and also determined their genetic diversity through SSR markers.
Analyses showed that, while starch granular size varied among samples with diameters ranging from 5 and 85 μm, granular shape was similar.
Differential Scanning Calorimeter analyses showed that transition temperatures (69°C-74°C) and gelatinisation enthalpies (0.9-3.8 J/g of starch) depend on tuber variety. SSR analyses enabled the identification of 157 alleles across all varieties, with an average value of 6.8 alleles per locus. Variety-specific alleles were also identified.
Scanning electron microscope (SEM) images of starch granules in 4 potato varieties.
"Tubers showed single endothermic transitions corresponding mainly to starch gelatinisation at considerably different thermal parameters, meaning they are suitable for different uses. A more detailed study on extracted starch rather than tuber tissue will be carried out in the future. Molecular analyses revealed interesting genotypes. Even though we haven't found associations between SSR and starch characteristics, genetic detection via SSR markers and microstructural classification through scanning electron microscope (SEM) analysis provided useful information to identify a large series of potato genotypes," explained researchers.
Sourche: Annalisa Romano, Paolo Masi, Riccardo Aversano, Francesca Carucci, Sara Palomba, Domenico Carputo, 'Microstructure and tuber properties of potato varieties with different genetic profiles', 2018, Food Chemistry, Vol. 239, pag. 789–796
Publication date: 11/9/2017
Receive the daily newsletter in your email for free | Click here
Other news in this sector: