Total Folate Content and Retention in Rosehips (Rosa ssp.) after Drying

Abstract

Folate concentrations in rosehips and commercial rosehip products and factors affecting folate retention during drying were investigated. On the basis of the raw material studied during 3 years, rosehips were shown to be a rich folate source, 400-600 microg/100 g based on dry matter and 160-185 microg/100 g based on the fresh weight (edible part). Rosehips are not often consumed fresh; therefore, drying to produce stable semimanufactures is a crucial step. The degradation of folate was shown to be dependent on the drying time until the water activity was below 0.75. The required drying time was reduced by cutting the rosehips in slices and to some extent also by increasing the temperature. Retention of folate and ascorbic acid was affected by the same factors, and high content of ascorbic acid could provide a possible protection for folate degradation.

The role of rose hip (Rosa canina L) powder in alleviating arthritis pain and inflammation – part II animal and human studies

“…However, the present rose hip powder, when given in a daily dose of up to 5 g contains 20-30 µg of folic acid. 47 The recommended daily dose of folic acid from health authorities is 300-400 µg. Intake of 5 g rose hip powder daily is therefore not expected to negatively influence ongoing methotrexate treatment.…”

Flavonoid and Organic Acid Content in Rose Hips (Rosa L., Sect. Caninae Dc. Em. Christ.)

“…In the hips of roses from the Caninae section, the level of ascorbic acid has been determined most frequently (Halásová and Jièínská, 1988;Gao et al, 2000;Kovács et al, 2000;Demir and Özcan, 2001;Strålsjö et al, 2003;Uggla et al, 2003;Erentürk et al, 2005;Kovács et al, 2005;Novruzov and Shamsizade, 2005;Pirone et al, 2007;Nojavan et al, 2008;Nueleanu et al, 2008). Also measured were carotenoids (Hodisan et al, 1997;Gao et al, 2000;Böhm et al, 2003;Novruzov and Shamsizade, 2005;Olsson et al, 2005;Pirone et al, 2007), flavonoids and anthocyanins (Nowak, 1994;Nowak and Hawrył, 2005;Pirone et al, 2007;Adamczak et al, 2010), total phenols (Gao et al, 2000;Nowak and Gawlik-Dziki, 2004;Olsson et al, 2005;Ercisli, 2007;Kilicgun and Altiner, 2010), sugars (Kovács et al, 2000;Uggla et al, 2005;Pirone et al, 2007) and nutrients (Kovács et al, 2000;Demir and Özcan, 2001;Ercisli, 2007).…”

Carotenoid content and composition in rose hips (Rosa spp.) during ripening, determination of suitable maturity marker and implications for health promoting food products

“…Rose hips have been found to contain higher amounts of various bioactive compounds than several other fruits and berries (Halvorsen et al, 2002;Olsson, Gustavsson, Andersson, Nilsson, & Duan, 2004). In addition to a high content of ascorbic acid (Gao, Bjork, Trajkovski, & Uggla, 2000;Olsson et al, 2004;Uggla, Gao, & Werlemark, 2003), rose hips have a significant content of carotenoids (Gao et al, 2000;Hornero-Mendez & Minguez-Mosquera, 2000a;Olsson et al, 2004;Razungles, Ozszmianski, & Sapis, 1989), phenolic compounds (Gao et al, 2000;Hvattum, 2002;Olsson et al, 2004), folates (Strålsjö, Alklint, Olsson, & Sjöholm, 2003), and healthful fatty acids (Larsen et al, 2003). The recent interest in specific carotenoids for different health-food purposes implicate that an increased knowledge of specific carotenoids are of high importance for health issues, e.g.…”