Ciencia y Tecnología

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www.cepetecno.blogspot.com

HIGOS y BREVAS

Los higos y las brevas proceden del mismo árbol – la higuera – , pero los higos son su segunda cosecha. Y aunque para nosotros son frutos, en realidad son una flor modificada (el fruto son los pequeños granitos que hay dentro).

Los higos tienen una gran cantidad de propiedades: son laxantes, aumentan las defensas del sistema inmunológico y disminuyen el nivel de colesterol en sangre. Además se recomienda tomarlos en épocas de estrés y cansancio.

Nos aportan fibra, vitamina C y A, potasio, magnesio, calcio y fósforo. Por otro lado. su alto contenido en azúcares los hace una fruta muy energética. de ahí que sean ideales para embarazadas, niños o deportistas. Si sigues una dieta piensa que aportan 65 kcal/100g.

ARANDANOS - Osteoporosis Pos-menopáusica

¿Sabía que el consumo de arándanos puede evitar la osteoporosis pos-menopáusica?


Aquí le presentamos el resumen de un estudio realizado sobre la relación entre arándanos y osteoporosis en ratas ovariectomizadas. La conclusión es la siguiente: "In summary, our findings indicate that blueberry can prevent bone loss as seen by the increases in BMD and favorable changes in biomarkers of bone metabolism".

Resumen
The objective of the present study was to explore the bone protective role of blueberry in an ovariectomized rat model. Thirty 6-month-old female Sprague–Dawley rats were either sham-operated (Sham) or ovariectomized (Ovx) and divided into three groups: Sham, Ovx (control), Ovx+blueberry (5% blueberry w/w). After 100 days of treatment, rats were euthanized, and blood and tissues were collected. Bone mineral
density (BMD) and content of whole body, right tibia, right femur and fourth lumbar vertebra were assessed via dual-energy X-ray absorptiometry. As expected, Ovx resulted in loss of whole-body, tibial, femoral, and 4th lumbar BMD by approximately 6%. Blueberry treatment was able to prevent the loss of whole-body BMD and had an intermediary effect on prevention of tibial and femoral BMD when compared to either Sham or Ovx controls. The bone-protective effects of blueberry may be due to suppression of Ovx-induced increase in bone turnover, as evident by lowered femoral mRNA levels of alkaline phosphatase, collagen type I and tartrate-resistant acid phosphatase to the Sham levels. Similarly, serum osteocalcein levels were also lower in the blueberry group when compared to the Ovx control group, albeit not significantly. In summary, our findings indicate that blueberry can prevent bone loss as seen by the increases in BMD and favorable changes in biomarkers of bone metabolism.

Fuente: Latha Devareddya et al., Blueberry prevents bone loss in ovariectomized rat model of postmenopausal osteoporosis, Journal of Nutritional Biochemistry 19 (2008) 694–699.

Nota: Una copia de este artículo se puede solicitar a LIOFRUT@gmail.com

ARANDANOS Liofilizados

LIOFRUT - empresa liofilizadora de frutas - se complace en informar que ha desarrollado un nuevo producto: Concentrado de Arándanos (en Polvo).

Aquí le mostramos una foto de este producto.




Contacto: liofrut@gmail.com

ARANDANOS e Inflamación de Colon

Blueberries are a rich source of phenylpropanoid-derived phytochemicals, widely studied for their potential health benefits. Of particular interest for colonic health are the lower molecular weight phenolic acids and their derivatives, as these are the predominant phenolic compounds detected in the colon. Blueberries contained a wide variety of phenolic acids, the majority of which (3371.14 l 422.30 mg/kg compared to 205.06 l 45.34 mg/kg for the free phenolic acids) were attached to other plant cell-wall components and therefore, likely to become available in the colon. Cytokine-induced stimulation of the inflammatory pathways in colon cells was four-fold up-regulated in the presence of the free phenolic acid fraction. Incubation of the bound phenolic acids with human faecal slurries resulted in qualitative and quantitative differences in the phenolic compounds recovered. The metabolites obtained by incubation with faecal slurries from one volunteer significantly decreased (1.67 l 0.69 ng/cm3) prostanoid production, whereas an increase (10.78 l 5.54 ng/cm3) was obtained with faecal slurries from another volunteer. These results suggest that any potential protective effect of blueberry phenolics as anti-inflammatory agents in the colon is a likely result of microbial metabolism.

Fuente: Wendy R. Russell, Aurelie Labat, Lorraine Scobbie and Sylvia H. Duncan, "Availability of blueberry phenolics for microbial metabolism in the colon and the potential inflammatory implications", Mol. Nutr. Food Res. 2007, 51, 726–731