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Wild edible plants (WEPs) are the natural food source that can help to mitigate food insecurity and improve starvation in low income countries including Ethiopia. Despite the widespread use of WEPs in Ethiopia, studies on the nutritional contents of Ethiopian WEPs are limited. The objective of the current study is to evaluate the nutritional value (proximate, mineral, and vitamin C contents) of the most consumed seven wild edible plants collected from Lasta District, Northeastern Ethiopia. The nutritional parameters including proximate, macro and micronutrients, and also vitamin C contents of the selected seven wild edible plants were evaluated using standard food analysis methods (moisture by dry-oven method, ash by high-temperature incineration in an electric muffle furnace, fat by Soxhlet extraction procedure, protein by Kjeldahl process, minerals by Atomic absorption spectrometer and atomic emission spectrometry and vitamin C by using a spectrophotometer). One-way ANOVA was used to analyze the nutritional content variations of selected WEPs. The proximate composition of the 7 WEPs came in the respective ranges of moisture (6.50–9.77 g/100 g); ash (6.99–26.35 g/100 g); crude protein (13.1–33.63 g/100 g); crude fat (1.08–9.83 g/100 g); crude fiber (6.21–43.77 g/100 g); utilizable carbohydrate (30.11–66.25 g/100 g) and gross energy (213.05–414.80 Kcal/100 g). The mineral composition of WEPs (mg/100 g dry weight) for macronutrients ranged from 25.53–37.99 Na, 56.65–72.79 Mg, 14.40–43.57 K, 44.35–60.14 Ca, and for micronutrients it ranged from 10.51–27.96 Fe, 8.35–23.87 Zn, 14.08–23.20 Cu, and 7.99–19.08 Mn. The vitamin C contents of WEPs (mg/100 g dry weight) ranged from 2.16–70.42 except in Haplocarpha rueppelii leaves in which its vitamin C content is below the detection limit. The outcome of the investigation indicates that the proximate, mineral and vitamin C contents of the WEPs included in the analysis were higher than those of some common crops (sorghum, rice, wheat, barley and maize), indicating their nutritional contribution to the human diet in the studied area. These wild food sources make up a good part of the traditional subsistence system of the people of Lasta District alongside their common food crops and other food sources.
Wild edible plants (WEPs) are the natural food source that can help to mitigate food insecurity and improve starvation in low income countries including Ethiopia. Despite the widespread use of WEPs in Ethiopia, studies on the nutritional contents of Ethiopian WEPs are limited. The objective of the current study is to evaluate the nutritional value (proximate, mineral, and vitamin C contents) of the most consumed seven wild edible plants collected from Lasta District, Northeastern Ethiopia. The nutritional parameters including proximate, macro and micronutrients, and also vitamin C contents of the selected seven wild edible plants were evaluated using standard food analysis methods (moisture by dry-oven method, ash by high-temperature incineration in an electric muffle furnace, fat by Soxhlet extraction procedure, protein by Kjeldahl process, minerals by Atomic absorption spectrometer and atomic emission spectrometry and vitamin C by using a spectrophotometer). One-way ANOVA was used to analyze the nutritional content variations of selected WEPs. The proximate composition of the 7 WEPs came in the respective ranges of moisture (6.50–9.77 g/100 g); ash (6.99–26.35 g/100 g); crude protein (13.1–33.63 g/100 g); crude fat (1.08–9.83 g/100 g); crude fiber (6.21–43.77 g/100 g); utilizable carbohydrate (30.11–66.25 g/100 g) and gross energy (213.05–414.80 Kcal/100 g). The mineral composition of WEPs (mg/100 g dry weight) for macronutrients ranged from 25.53–37.99 Na, 56.65–72.79 Mg, 14.40–43.57 K, 44.35–60.14 Ca, and for micronutrients it ranged from 10.51–27.96 Fe, 8.35–23.87 Zn, 14.08–23.20 Cu, and 7.99–19.08 Mn. The vitamin C contents of WEPs (mg/100 g dry weight) ranged from 2.16–70.42 except in Haplocarpha rueppelii leaves in which its vitamin C content is below the detection limit. The outcome of the investigation indicates that the proximate, mineral and vitamin C contents of the WEPs included in the analysis were higher than those of some common crops (sorghum, rice, wheat, barley and maize), indicating their nutritional contribution to the human diet in the studied area. These wild food sources make up a good part of the traditional subsistence system of the people of Lasta District alongside their common food crops and other food sources.
As pesquisas associadas ao tema de manejo da biodiversidade em sistemas de produção englobam diversos aspectos, dentre eles a escolha dos melhores arranjos populacionais das plantas cultivadas. A utilização de hortaliças não convencionais, como a taioba Xanthosoma sagittifolium (L.) Schott, na diversificação dos sistemas produtivos é uma ótima alternativa do ponto de vista de segurança alimentar do produtor e também para a geração de renda. Contudo, na literatura ainda são escassas as informações sobre seu manejo e produção. Nesse sentido, objetivou-se avaliar diferentes densidades de plantio de taioba cultivada em consórcio, sob pomar de bananeiras, verificando seu desenvolvimento e produção. O experimento foi realizado na área experimental da Universidades Federal do Espírito Santo (UFES), localizado no município de Alegre ES. O delineamento foi em blocos casualizados, com seis repetições, no esquema de parcelas subdivididas. As parcelas foram compostas pelos sistemas de plantio em linha simples e duplas. As subparcelas foram compostas pelos espaçamentos entre plantas de 30, 40 e 50 cm. Foram avaliadas a área foliar, número de folhas, matéria fresca e matéria seca de folhas, índices de clorofila, flavonoides e balanço de nitrogênio. Adicionalmente estimou-se a Renda Bruta, através da estimativa da capacidade de produção de folhas, transformada em capacidade de produção de maços de folhas comerciais, que seriam produzidos em 1,0 hectare de taioba, a partir dos arranjos adotados no consórcio com bananeiras. As maiores produções de matérias fresca e seca da taioba foram observadas quando se adotou o maior espaçamento entre plantas (50 cm), tanto em linha simples quanto em linhas duplas. Os arranjos estudados não influenciaram no número de folhas emitidas pelas plantas, por isso, o maior rendimento bruto foi obtido com a maior densidade de plantas, alcançada com o plantio no espaçamento de 30 cm entre plantas, em linhas duplas. Sendo assim, os resultados demonstram que a diversificação da produção do pomar de bananeira, com plantio de taioba em entrelinhas alternadas, representou uma real alternativa de renda extra ao agricultor.
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