Composition and color stability of anthocyanin-based extract from purple sweet potato

AbstractPurple sweet potato (PSP) can provide products with attractive color besides nutritious benefits in food processing. So, the compositions and color stability of an aqueous anthocyanin-based PSP extract were investigated in order to promote its wide use in food industry. PSP anthocyanins were extracted with water, and nine individual anthocyanins (48.72 ug mL–1 in total, 24.36 mg/100 g fresh PSP in yield) were found by HPLC analysis. The PSP extract also contained 17.11 mg mL–1 of protein, 0.44 mg mL–1 of dietary fiber, 2.82 mg mL–1 of reducing sugars, 4.02 ug mL–1 of Se, 54.21 ug mL–1 of Ca and 60.83 ug mL–1 of Mg. Changes in color and stability of the PSP extract, as affected by pH, heat, light and extraction process, were further evaluated. Results indicated that PSP anthocyanins had good stability at pH 2.0-6.0, while the color of PSP extract kept stable during 30 days of storage at 20 °C in dark. Both UV and fluorescent exposure weakened the color stability of PSP extract and UV showed a more drastic effect in comparison. A steaming pretreatment of fresh PSP is beneficial to the color stability.

Finska kyrkor i svenska församlingar – den finskspråkiga minoriteten i Nyland och Egentliga Finland ca 1721–1850

Artikel i festskrift.

Marks of Fire, Value and Faith. Swords with Ferrous Inlays in Finland during the Late Iron Age (ca. 700–1200 AD)

This study explores swords with ferrous inlays found in Finland and dating from the late Iron Age, ca. 700–1200 AD. These swords reflect profound changes not only in styles and fashion but also in the technology of hilts and blades. This study explores how many of these kinds of swords are known from Finland, how they were made and where, what their status was in Late Iron Age Finland, and where the Finnish finds stand in accordance with other areas of Europe. The various methods included measuring of the finds and statistics. The main method of revealing the inlaid marks was radiography due to its non-destructive nature. In cases where inlays were visible without radiography, their details were inspected via microscopy. To study the materials and manufacture of inlaid swords, a sample of them was metallographically analysed to determine the forging technologies and nature of used materials. Furthermore, the manufacture was also studied with experimental approaches. As a result, a catalogue of 151 swords with ferrous inlays was created. This number is relatively high compared with other European countries, although systematic studies have been conducted in only some countries. The inlaid motifs were classified into five distinct categories to help the classification. To summarize, almost every documented inlaid sword was unique in some respect including measurements, inlaid motifs and materials of blades and inlays. Technological variation was also present, some blades being poorer and some of higher quality in spite of the inlaid motifs. Misspelt inscriptions as well as letter-like marks were common in Finland and also in Scandinavia. Furthermore, the provenance of iron and steel used in some blades hints at Scandinavian ores. The above observations, along with the experimental results indicating the existence of multiple alternative techniques of inlaying, suggest that these swords were manufactured locally in Scandinavia, most likely in imitation of Continental European models. Inlaid swords were valued partly for their assumed functionality in combat, as evidenced by damage on some examined blades, or they were valued for their inlays, which could have had fashionable or symbolical meanings bound to local beliefs.

9/5/20, [Jean] Alavoine, gagnant du championnat [de] France [des 100 km] sur route : [photographie de presse] / [Agence Rol]

Référence bibliographique : Rol, 59216

9/5/20, championnat [de] France [des] 100 km sur route [cyclisme] : [photographie de presse] / [Agence Rol]

Référence bibliographique : Rol, 59217

9/5/20, championnat [de] France [des] 100 km sur route [cyclisme] : [photographie de presse] / [Agence Rol]

Référence bibliographique : Rol, 59219

6-6-20, Parc des Princes, départ du championnat de France des 100 km [cyclisme sur piste] : [photographie de presse] / [Agence Rol]

Référence bibliographique : Rol, 59558

6-6-20, Parc des Princes, championnat de France des 100 km [cyclisme sur piste] : [photographie de presse] / [Agence Rol]

Référence bibliographique : Rol, 59560

6-6-20, Parc des Princes, [Georges] Sérès, champion de France des 100 km [cyclisme sur piste] : [photographie de presse] / [Agence Rol]

Référence bibliographique : Rol, 59564

13-6-20, Croix Catelan, prix Blanchet, arrivée du 100 m, Caste [vainqueur] : [photographie de presse] / [Agence Rol]

Référence bibliographique : Rol, 59674

Caste, [13-6-20, Croix Catelan, prix Blanchet, portrait du vainqueur du] 100 m : [photographie de presse] / [Agence Rol]

Référence bibliographique : Rol, 59679

Saint-Cloud [Parc de la Faisanderie], 20/6/20, arrivée du 100 m : [photographie de presse] / [Agence Rol]

Référence bibliographique : Rol, 59785