Background/Aims: Traditional edible plants are good sources of minerals, fibers, proteins and others useful phytochemicals for human nutrition and health. Mondia whitei and Pyrenacantha klaineana leaves are underutilized, wild edible plants considered as food and spice in habitants in some part of Northern Angola. The aim of this study was to investigate the nutritional value and mineral contents of M. whitei and P. klaineana leaves. Materials and Methods: The leaves were harvested from a forest. The samples were analyzed for proximate and mineral contents using the standard methods. The results were analyzed statistically using mean and standard deviation. Results: The proximate composition of M. whitei raw and cooked leaves showed that the samples had ranged of ash, 9.53 - 12.93%, fiber 13.16 - 15.11%, protein 16.48 - 19.24%, fat 2.95 - 4.94%, carbohydrates 51.59 - 54.48% and energy (kcal) 310.39 - 326.10 in 100 g respectively. The proximate composition of P. klaineana raw and cooked leaves showed that the samples had range of ash, 4.13 - 6.74%, fiber 40.45 - 43.56%, protein 14.93 - 18.80%, fat 1.13 - 3.78%, carbohydrates 29.74 - 36.58% and energy (kcal) 217.77 - 227.88 in 100 g respectively. The mineral contents of the P. klaineana raw leaves, K 2459.20 mg, Ca 2126.33 mg, P 239.90 mg, Se 77.86 mg are richer than M. whitei raw leaves, K 1149.83 mg, Ca 844.87 mg, P 175.89 mg, etc. Conversely, the leaves of M. whitei are richer in Se 87.80 mg and Cu 3.14 mg/ 100 g than the P. klaineana (Se 77.86 and Cu 2.84 mg/100 g). Conclusion: The wild edible leaves are rich in nutritional value and mineral composition such as fiber, protein, Ca, Fe, K, Mn, Mg, P, Se etc. The consumption of M. whitei and P. klaineana leaves should be vulgarized to nutrition, diversity diet and food security.

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The effects of inbreeding were studied in three oil palm (Elaeis guineensis Jacq.) trials in the Democratic Republic of Congo (Congo). In selfings, marked inbreeding depression was observed for yield of fruit bunches, mean bunch weight and bunch number, but there was little effect on bunch composition. Most vegetative measurements were significantly affected by selfing, but leaf production rate and leaf area ratio were unaffected. Sib-crossing had less depressive effect than selfing, and in some families sib-crosses were superior to outcrosses. Where selection needs to be done within inbred families, our study suggests that leaf area ratio and bunch composition would be useful criteria.

This study aimed to inventory, identify, characterize and valorize the various edible non wood forest products (NWFPs) sold in Uíge Province. Data for this study were collected between October 2016 and February 2020. A total of 156 edible NWFPs sellers were individually interviewed using semi-structured questionnaire at the 30 sales sites. 93.5% of edible NWFP sellers were female and 6.5% male. The main edible NWFPs sold in Uíge Province are animal products with 47 species, of which 48.9% are Mammals, 21.3% Insects, 12.8% Actinopterygii, 6.4% Birds, 8.5% Reptiles, and 2.1% Sarcopterygii. Plants represent 38.5% (35 species) of the edible NWFPs sold in the study area, of which 78.8% are Dicotyledones, 21.2% Monocotyledones, 2.9% Gnetophytes and 2.9% Pteridophytes. Besides, Mushrooms account for barely 9.9% of the edible NWFPs sold in this region. On the other hand, edible NWFPs are sold on formal and informal markets, in the bus parking lots, taxi runk, roadsides, restaurants and at the seller’ homes. For the sale of edible forest products, the vendors use non-standardized measuring units. The income generated by the sale of NWFPs is used to solve socio-economic problems in the household, including the purchase of basic necessities, health care, clothing, cosmetics, school materials, well-being, etc.