Chemical composition of defatted strawberry and raspberry seeds and the effect of these dietary ingredients on polyphenol metabolites, intestinal function, and selected serum parameters in rats.
Strawberry and raspberry seeds were chemically analyzed and added as dietary ingredients to investigate the physiological response of rats. In both cases the main component was dietary fiber and the main polyphenols were ellagitannins (ET). The strawberry ET were mainly constituted by monomers and a dimer, agrimoniin, whereas raspberry ET were mainly constituted by a dimer, sanguiin-H-6, and a trimer, lambertianin-C. The lower content and the less polymerized structure of strawberry ET resulted in a higher cecal metabolites concentration (mainly nasutin and urolithin-A) in comparison to rats fed diet containing raspberry seeds. Dietary raspberry seeds, a source of dietary fiber, despite being richer in polyphenol compounds, were better utilized in fermentation processes, resulting in enhanced production of short-chain fatty acids. As opposed to strawberry seeds, the treatment with raspberry seeds beneficially improved the atherogenic index of a diet, mainly due to reduced triacylglycerol concentration in the serum.
†Institute of Chemical Technology of Food, Lodz University of Technology, Stefanowskiego 4/10, 90-924 Lodz, Poland.
Monika
M
Kosmala
§Institute of Animal Reproduction and Food Research, Polish Academy of Sciences, Division of Food Science, Tuwima 10, 10-748 Olsztyn, Poland.
Zenon
Z
Zduńczyk
§Institute of Animal Reproduction and Food Research, Polish Academy of Sciences, Division of Food Science, Tuwima 10, 10-748 Olsztyn, Poland.
Jerzy
J
Juśkiewicz
§Institute of Animal Reproduction and Food Research, Polish Academy of Sciences, Division of Food Science, Tuwima 10, 10-748 Olsztyn, Poland.
Adam
A
Jurgoński
†Institute of Chemical Technology of Food, Lodz University of Technology, Stefanowskiego 4/10, 90-924 Lodz, Poland.
Elżbieta
E
Karlińska
†Institute of Chemical Technology of Food, Lodz University of Technology, Stefanowskiego 4/10, 90-924 Lodz, Poland.
Jakub
J
Macierzyński
#New Chemical Syntheses Institute, Aleja Tysiąclecia Państwa Polskiego 13a, 24-110 Puławy, Poland.
Rafał
R
Jańczak
#New Chemical Syntheses Institute, Aleja Tysiąclecia Państwa Polskiego 13a, 24-110 Puławy, Poland.
Edward
E
Rój
D000818:Animals; D004043:Dietary Fiber / Q000378:metabolism; D005232:Fatty Acids, Volatile / Q000378:metabolism; D031985:Fragaria / Q000737:chemistry* / Q000378:metabolism; D005638:Fruit / Q000737:chemistry; D047348:Hydrolyzable Tannins / Q000378:metabolism; D007413:Intestinal Mucosa / Q000378:metabolism*; D059808:Polyphenols / Q000378:metabolism*; D051381:Rats; D017208:Rats, Wistar; D065856:Rubus / Q000737:chemistry* / Q000378:metabolism; D012639:Seeds / Q000737:chemistry* / Q000378:metabolism; D014280:Triglycerides / Q000097:blood
D004043:Dietary Fiber; D005232:Fatty Acids, Volatile; D047348:Hydrolyzable Tannins; D059808:Polyphenols; D014280:Triglycerides
berry defatted seeds; dietary fiber; ellagitannin; rat; serum