Physiological and physico-chemical characterization of dietary fibre from the green seaweed Ulva fasciata Delile

Abstract

This work aims to assess the potential of the green seaweed Ulva fasciata Delile as an alternative source of dietary fibre (DF). Total DF content was determined, some of its physico-chemical properties described and the physiological effects of U. fasciata meal on rats fed a hypercholesterolemic diet were investigated. U. fasciata may be considered a potential alternative source of DF with a total content of about 400 g.kg -1 (dry basis) and interesting physico-chemical properties: water retention capacity of 8.74 g/water.g -1 dry sample (seaweed meal) and 0.90 (seaweed carbohydrate extract), lipid adsorption capacity of 4.52 g/oil.g -1 dry sample (seaweed meal) and 5.70 (seaweed carbohydrate extract), intrinsic viscosity of 2.4 dl.g -1 (seaweed carbohydrate extract) and cation exchange capacity of 3.51 Eq.kg -1 (seaweed carbohydrate extract). The diet containing seaweed meal was able to keep rats' total cholesterol (TC) down without causing any undesirable increase in LDL-C fraction. No evidence of toxic and/or antinutritional components in the seaweed meal was detected. Rats showed a fecal volume much greater (13 g) than that fed on cellulose diet (7 g) (p < 0.05). These properties confer on the seaweed the potential to be used in food technology for the acquisition of low-calorie food and might be important in body weight control, reduction of blood TC and LDL-C as well as in prevention of gastrointestinal diseases.

Characterization of vegetable fiber and its use in chicken burger formulation

“…These differences can be related to variations in the fibers particle size, in nutritional composition and also on the variety of the cereal that provided the fiber samples (Carvalho et al 2009). Apple, potato and pea fibers also presented the lowest values of oil holding capacity (Table 4).…”

“…Pea and potato fibers present naturally resistant starch (Rosell et al 2009) and, according to Kuan and Liong (2008), fibrous materials that contain high starch amounts provide lower oil holding capacity when compared with other fibrous products with lower starch contents. The oil retention capacity is also a property that has physiological effects, since it can interfere in the intestinal fat absorption, influencing in the body weight control and in the regulation of blood lipid profiles (Carvalho et al 2009). Table 3 also presents the bulk density results of the evaluated vegetable fibers.…”

Differential response of varying salinity and temperature on zoospore induction, regeneration and daily growth rate in Ulva fasciata (Chlorophyta, Ulvales)

“…This seaweed is a rich source of proteins, essential amino acids, fatty acids, vitamins, dietary fibers and minerals vital for human nutrition (Sitaka Rao and Tipnis 1964;Lewis 1966;McDermid and Stuercke 2003;Carvalho et al 2009;Kumari et al 2010). The iodine content has been estimated in a range of 29-37 mg per 100 g dry wt.…”

Perbaikan Parameter Lipid Darah Mencit Hiperkolesterolemia dengan Suplemen Pangan Bekatul

“…Serat pangan tidak larut dapat diperoleh dari selulosa, hemiselulosa, dan lignin yang ditemukan dalam serelia, buah-buahan, kacang-kacangan, sayursayuran, sedangkan serat pangan larut diperoleh dari pektin, agar, karagenan, alginat, gum, dan juga musilage. 4 Komponen serat pangan mempunyai sifat-sifat fisiologis yang tidak sama, bergantung pada sifat fisik dan kimia serat tersebut.…”