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nearly cosmopolitan perennial (Cyperus esculentum) of the family Cyperaceae (sedgesedge,
common name for members of the Cyperaceae, a family of grasslike and rushlike herbs found in all parts of the world, especially in marshes of subarctic and temperate zones.
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 family) of the same genus as the papyrus plant. The tigernut has been cultivated since early times (chiefly in S Europe and W Africa) for its small, tuberous rhizomes, which are eaten raw or roasted, used for hog feed, and pressed for the juice to make a beverage. A nondrying oil (usually called chufa) is also obtained from the rhizome. In W Africa the plant often grows in great concentration and is gathered from the wild. In the S United States it is sometimes a troublesome weed in planted fields. Other names are earth almond and yellow nut grass. The tigernut is classified in the division MagnoliophytaMagnoliophyta
, division of the plant kingdom consisting of those organisms commonly called the flowering plants, or angiosperms. The angiosperms have leaves, stems, and roots, and vascular, or conducting, tissue (xylem and phloem).
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, class Liliopsida, order Cyperales, family Cyperaceae.
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References in periodicals archive ?
The highest TBC of 5.8 was recorded for the uninoculated sample made from fifty percent each of sorghum and tigernut while the lowest (2.2) was obtained for 90SOR/10TIG (i.e., sample made from 90% sorghum and 10% tigernut).
Means with different superscript letters across columns are significantly different (p < 0.05); 100SOR/0TIG, 100% sorghum and 0% tigernut; 90SOR/10TIG, 90% sorghum and 10% tigernut; 80SOR/20TIG, 80% sorghum and 20% tigernut; 70SOR/30TIG, 70% sorghum and 30% tigernut; 60SOR/40TIG, 60% sorghum and 40% tigernut; 50SOR/50TIG, 50% sorghum and 50% tigernut.
Tigernuts (Cyperus esculentus), date palm fruit (Phoenix dactylifera), spices (ginger and pepper), and sugars were purchased from a local market in Umuahia Township, Abia State, Nigeria.
Healthy tigernuts (1 kg) were washed to remove dirt.
Tigernut dietary inclusion (%) Ingredients 0 25 50 75 100 Maize 25.0 18.75 12.50 6.25 - Tigernut - 6.25 12.50 18.75 25.0 Soya bean meal 25.0 25.0 25.0 25.0 25.0 Fish meal 20.0 20.0 20.0 20.0 20.0 Groundnut meal 10.0 10.0 10.0 10.0 10.0 Blood meal 10.0 10.0 10.0 10.0 10.0 Spent grain 5.0 5.0 5.0 5.0 5.0 Bone meal 2.0 2.0 2.0 2.0 2.0 Vitamin-premix 0.25 0.25 0.25 0.25 0.25 Lysine 0.25 0.25 0.25 0.25 0.25 Methionine 0.25 0.25 0.25 0.25 0.25 Vegetable oil 2.0 2.0 2.0 2.0 2.0 Salt 0.25 0.25 0.25 0.25 0.25 Total 100.0 100.0 100.0 00.0 100.0 2.4.
Results of the nutrients assay of the experimental feeds revealed that the crude protein concentration decreased from 40.11% in control diet (0%) to 37.34% in tigernut based diet (100%).
Table 4: Proximate composition of tigernut based diets fed to catfish (C.
The group on 75% dietary inclusion of tigernut had the best FCR while the control diet recorded the least value.
The highest value of 1.24 was recorded from catfish fed 50% tigernut based diet while the least 1.18 was recorded for catfish group fed diet with 100% tigernut inclusion.
gariepinus fingerlings were fed cocoyam and tigernut based diets (19), (4) respectively.
The greatest body weight gain of fish (317.54 g) recorded at 50% dietary inclusion of tigernut may be due to synergetic effect between the utilization of polysaccharides in maize and tigernut tubers by the catfish, and was able to convert it into muscle for growth.
This result is not in agreement with earlier report (4) that recorded a decline in growth of African catfish juveniles fed tigernut based diets beyond 50% dietary level.