Nutraceutical value and production of the sweet potato (Ipomoea batatas L.) cultivated in South-West of Romania

Abstract

In Romania, the sweet potato is recently cultivated, especially in the South-West region. This region has a temperate continental climate that is characterized by the lack of water in the soil and atmosphere and by a diversity of soil types, very important factors for the cultivation of this species. The lack of information about the real effects of the environmental factors on the nutritional quality and the production of sweet potatoes grown in this area led to this study. Therefore, the present paper aims to evaluate the nutraceutical content of 5 sweet potato genotypes, such as: TSS (total soluble substance), total carotene, reducing sugars, vitamin C, phenolic compounds, flavonoid content and antioxidant activity (determined by DPPH and ABTS) grown in the specific climatic conditions of this region. There was found a differentiated nutritional quality depending on the genotype, so that genotype 5 was rich in carotene (59.29 μg/g FW) and vitamin C (36.56 mg/100 g FW). The data presented in this study also refer to the total number of roots/plant, the average weight/root, the total production/ha, the biomass production/ha and the production index. Regarding these elements, genotype 3 recorded a biomass production of 39.5 t/ha and a total tuber production of 50.3 t/ha. The results presented in this study indicate that the production of this species is climate dependent, which influences important metabolites in tubercles, that plays an essential role in organoleptic properties.

Effect of biological and organic fertilizers on growth processes, productivity and quality of melon fruits under Southeastern Kazakhstan

“…The lowest content on average was indicated in option, where biohumus was added under melon plants, at a rate of 10 t/ha. However, a literature review shows [26][27] that the content of dry substances on melon culture did not exceed 8.5% in scientific studies with other types of bioorganic waste. Agricultural yield is the main KPI (key performance indicator) of agricultural technologies.…”

Phytochemical Content and Antioxidant Activity of Two Cultivars of White Cabbage

“…(Soare et al, 2017). Catalase activity (CAT) was assayed colorimetric at 570 nm and the results were expressed as mM H 2 O 2 /min/g fw at 25 °C (Dinu et al, 2021). For the determination of antioxidant activity, total phenolic and total flavonoids content samples were extracted with 80% aqueous methanol (1:10 w:v) by sonicating for 60 min in a sonicate bath Fungilab (Madrid, Spain).…”

“…Antioxidant capacity values were expressed as μM TE/100 g fw. ABTS radical cation scavenging activity (2,2'-azino-bis(3-ethylbenzothiazoline-6sulfonic acid)) was measured colorimetric at 734 nm using Trolox as standard (Dinu et al, 2021). The final results were expressed as μM TE/100g fw.…”

A review on the potential health benefits of sweet potato: insights into its preclinical and clinical studies

“…One of the most important biological activities of sweet potatoes is the antioxidant activity, which has also contributed to the use of sweet potatoes in the treatment of various diseases such as cancer, diabetes, hepatic disorders and cardiovascular diseases (Devasagayam et al ., 2004; Halliwell & Gutteridge, 1990). Leaves of sweet potato demonstrated strong antioxidant activity (Kwak et al ., 2013; Jeng et al ., 2015; Jang & Koh, 2019) due to their bioactive compounds such as caffeoylquinic acid derivatives (Yoshimoto et al ., 2002) (Xi et al ., 2015; Dinu et al ., 2018). The roots of sweet potato also exhibited antioxidant activity (Ji et al ., 2015; Tang et al ., 2015) (Salawu et al ., 2015).…”