August 2017

Genetic and phenotypic variations in egg shell colour of two ectotypes of Giant African Land Snail (Archachatina marginata var. saturalis)

Data from the snail farm of the University of Calabar, Nigeria were collected and utilized to investigate the distribution and gene frequencies of egg shell colour of two ectotypes of Giant African Land Snails (Archachatina marginata var. saturalis), black skinned (BS) × black skinned mating group, and white skinned (WS) × white skinned mating group. The eggs collected were scored for the presence of yellow...

Author(s): Ibom L. A., Okon B.,  Akpe A. E. and Okon F. I.

August 2017

Exploring genetic diversity and structure of Acacia senegal (L.) Willd. to improve its conservation in Niger

The genetic diversity of African forest resources is poorly documented while it can be the basis for adapting these resources to climatic variations. This study aimed to characterize the genetic diversity of the Acacia senegal (L.) Willd in its natural range in Niger. 252 individuals from 10 populations of the species, across three gum basins were analyzed with 9 nuclear microsatellite markers. Genetic diversity indexes...

Author(s): ELHADJI SEYBOU Djibo, ASSOUMANE Aichatou, ABDOU MAMAN Manssour, HASSANE ISSOUFOU Bil-assanou, MOUSSA Djibo, TIDJANI Moussa and ALZOUMA MAYAKI Zouberou

August 2017

Evaluating auto-detoxification of Jatropha curcas Linnaeus, 1753 kernel cake with brine shrimp Artemia salina (Linnaeus, 1758) lethality test

Jatropha curcas Linnaeus, 1753 is a plant with several uses for communities in Cameroon and other African countries. However, present methods of detoxifying J. curcas kernel cake (JKC) to add value to its further utilization are too sophisticated for cottage operations in rural areas. This study sought to evaluate two auto-detoxification methods using the shellfish brine shrimp, Artemia salina (Linnaeus, 1758). Two...

Author(s): Divine Ewane, Pius M. Oben, Kenneth J. N. Ndamukong, Benedicta O. Oben, Kingsley A. Etchu and Kennedy F. Chah

August 2017

Purification and characterization of thermostable and alcohol tolerant lipase from Pseudoxanthomonas sp.

An extracellular lipase from Psedoxanthomonas sp. was purified 47.3 folds with an overall yield of 27% through purification procedure of acetone precipitation, ion exchange and gel filtration chromatography. Protein precipitation using acetone fractionation showed that the enzyme was precipitated at the fraction of 0 to 40%. Further purification of the enzyme by ion exchange followed by gel filtration chromatography...

Author(s): Syifa F. Syihab, Fida Madayanti, Akhmaloka Akhmaloka, and Made Puspasari Widhiastuty