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International Journal of Innovation and Scientific Research
ISSN: 2351-8014
 
 
Thursday 17 October 2019

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Determination of Morphological and Nutritional Properties of Thaumatococcus daniellii and Effect of Harvesting Method on the Plant Growth


Volume 11, Issue 2, November 2014, Pages 304–311

 Determination of Morphological and Nutritional Properties  of Thaumatococcus daniellii and Effect of Harvesting Method  on the Plant Growth

Agwu A. Ndukwe, Edidiong A. Enoh, and Queendalyn U. Aniere

Original language: English

Received 26 May 2014

Copyright © 2014 ISSR Journals. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract


Thaumatococcus daniellii (Miraculous berry) belonging to the family maranthaceae is one of the sweeteners found in the tropical forest. However in Nigeria, because of the excessive use of this species as wrapping leaf, very little is known about its fruit as a source of sweetener. Although the leaves are sold in the market as wrapping leaf for bean budding (moi-moi) and other cooked foods such as rice. Information on the propagation of this species and utilization of its parts is very scanty making the species one of the threatened forest species. The objectives of this study were therefore to determine; the nutritional properties of the gelatinous layer of the fruit and the effects of various harvesting methods on the plant growth. The gelatinous layer of the fruits of Thaumatococcus daniellii is a sweetener known as "Thaumatin". Thaumatin is a sweet-tasting, flavor – enhancing protein. Some of the proteins in the thaumatin family are natural sweeteners roughly 2000 times more potent. The morphological characteristics of the stands of this species were measured using standard methods. The nutritional and the phytochemical composition of the gelatinous layer extracts of the fruits were analyzed in the laboratory using standard methods, while two harvesting methods were used to determine the effect of harvesting on the plant growth. The mean values of the morphological characteristics of stands of Thaumatococcus daniellii were as follows; stem height (154.9cm), stem girth (2.26cm), petiole length (24.86cm), petiole girth (1.69cm), leaf area (1018.93cm2). The phytochemical analysis of the gelatinous layer extracts of the fruit showed that it contains saponin (0.19%), flavonoids (0.41%), phenol (0.06%), HCN (0.81%), Tannin (0.16%), Alkaloid (0.11%), Phytate (0.05%). The nutritional analysis of the gelatinous layer extract of the fruits showed that it contains calcium (6.68mg/100g), magnesium (0.60mg/100g), Ash (5.80%), Fibre (0.41%), Protein (19.01), Nitrogen (3.04%). The result obtained showed that the species are highly nutririous and the sugar content of its fruit can be easily substituted for white sugar and also used in pharmaceutical industries for children syrups. The best harvesting method is the ground level harvesting method. Conservation of this species and should be promoted.

Author Keywords: Thaumatococcus daniellii, Thaumatin, Morphological properties, Nutritional properties, Harvesting methods.


How to Cite this Article


Agwu A. Ndukwe, Edidiong A. Enoh, and Queendalyn U. Aniere, “Determination of Morphological and Nutritional Properties of Thaumatococcus daniellii and Effect of Harvesting Method on the Plant Growth,” International Journal of Innovation and Scientific Research, vol. 11, no. 2, pp. 304–311, November 2014.