Page 345 - Natural Antioxidants, Applications in Foods of Animal Origin

324 Natural Antioxidants: Applications in Foods of Animal Origin
VetBooks.ir the peak values were reached on the fourth day in the case of amaranth and

on the sixth day in the case of quinoa. It was suggested that amaranth and
quinoa seeds and sprouts can be used in food, because it is a good source of
anthocyanins and total phenolics with high antioxidant activity.

8.5.4 OTHER SOURCES

8.5.4.1 BURDOCK ROOT

It is a source of inulin and popular vegetable in Japan. Burdock root has been
extensively analyzed for its components due to their antioxidant properties
(Chow et al., 1997) as well as for its extractable components having antimi-
crobial activity (Duh, 1998; Lin et al., 1996). The simultaneous ultrasonic/
microwave assisted extraction (UMAE) of inulin and production of phenols
rich DF powder from burdock root was studied (Lou et al., 2009). The DF
powder prepared from the residue of burdock root after inulin extraction
was rich in phenols (302.62 mg GAE/100 g powder). It was seen that drying
temperature in the selected range did not significantly affect the hydration
properties.

8.5.4.2 HIBISCUS

Hibiscus sabdariffa L., commonly known as roselle, red sorrel, or karkadè,
is widely grown in Africa, South East Asia, and some tropical countries
of America. Its fleshy flowers provide a soft drink consumed as a cold or
hot beverage. Pharmacological actions have been identified in H. sabdar-
iffa L. flowers, petals, and seeds (Ali-Bradeldin et al., 2005). Roselle is an
important source of vitamins, minerals, and bioactive compounds, such as
organic acids, phytosterols, and polyphenols. The phenolic content in the
plant consists mainly of anthocyanins like delphinidin-3-glucoside, sambu-
bioside, and cyanidin-3- sambubioside; other flavonoids like gossypetin,
hibiscetin, and their respective glycosides; protocatechuic acid, eugenol, and
sterols like—sitosterol and ergosterol (Ali-Bradeldin et al., 2005). The health
effects include cardioprotective action; reduction of urinary concentrations
of creatinine, uric acid, citrate, tartrate, calcium, sodium, potassium, phos-
phate; antihypertensive action; effectiveness against low-density lipoprotein
oxidation and hyperlipidemia (Herrera-Arellano et al., 2004; Jonadet et al.,
1990; Chen et al., 2003; Mojiminiyi et al., 2000; Odigie et al., 2003). In a