Tree Age and Harvesting Season Affected Physico-chemical and Bioactive Compounds of Elite Type of <i>Gunda Gundo</i> Orange (<i>Citrus Spp</i>) in the Northern Ethiopia

Aregay, Negash; Belew, Derbew; Zenebe, Amanuel; Haile, Mitiku; Gebresamuel, Girmay; Girma, Atkilt

doi:10.1080/15538362.2020.1852150

Cited by 9 publications

(6 citation statements)

References 51 publications

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“…The increase in the concentration of extracts led to an increase in the percentage of DPPH radical scavenging activity. Similarly, this was supported in related studies [35,55,56]. The lower EC 50 value indicates the higher DPPH radical scavenging potential and vice versa [57,58].…”

Section: Phenolic Compounds and Antioxidant Activitiessupporting

confidence: 77%

Nutritional and Antinutritional Potentials of Sorghum: A Comparative Study among Different Sorghum Landraces of Tigray, Northern Ethiopia

Semere,

Tsehaye,

Tareke

et al. 2023

Agriculture

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Sorghum is one of the staple food crops in Tigray, northern Ethiopia. Despite this, limited research attention was given to the nutritional and antinutritional profiling of sorghum. Thus, this research was initiated to profile and evaluate the variabilities in protein, starch, minerals, flavonoid, tannin, and antioxidant activities among sorghum landraces of Tigray, northern Ethiopia. Protein and starch were analyzed using an infrared spectrophotometer, whereas mineral elements were estimated using an atomic absorption spectrophotometer. Antioxidant activity was analyzed using DPPH (2,2-diphenyl-1-picrylhydrazyl) free radical scavenging, ferric-reducing antioxidant power, and phosphomolybdenum assays. The result revealed significant variation among the landraces for all the evaluated parameters. Protein and starch contents ranged from 6.21 to 18% and 33.42 to 78.30%, respectively. Wider variations were observed for Fe (32–101), Zn (16.9–42.98), Cu (1.48–5.25), Mn (9.21–20.23), and Cr (0–1.5) as measured in mg/100 g. The variabilities were high for total flavonoid (0–665 mg CE/g) and tannin (0.18–7.5 mgCE/100 g). DPPH (EC50 = 29.09–818.37 µg/mL), ferric reducing antioxidant power (17.85–334.81 mgAAE/g), and total antioxidant activity (1.71–63.88 mgBHTE/g) were also highly variable among the samples. The relationship between seed color and phenolics, as well as antioxidant activities, are discussed. Multivariate analysis revealed that the landraces were clustered into four distinct groups. The rich genetic diversity in the nutritional and antinutritional attributes may be an opportunity for breeding for grain quality improvements of sorghum that, in turn, helps in addressing malnutrition.

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Section: Phenolic Compounds and Antioxidant Activitiessupporting

confidence: 77%

Nutritional and Antinutritional Potentials of Sorghum: A Comparative Study among Different Sorghum Landraces of Tigray, Northern Ethiopia

Semere,

Tsehaye,

Tareke

et al. 2023

Agriculture

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“…Fruit quality is the result of complex interactions of genetic factors (plant crop and cultivar), environmental conditions, cultivation practices, harvesting time, and postharvest handling [10,43,44]. Our results suggest that there are considerable differences in various physical, chemical, and nutritional quality parameters in the citrus samples analyzed due to the different production systems.…”

Section: Discussionmentioning

confidence: 80%

“…The presence or absence of seeds in fruit is a determining factor of its commercial value. Citrus fruits which have a high number of seeds per fruit are generally not preferred for fresh consumption and are not suitable for the processing industry for juice extraction [44]. However, the presence of seeds in fruit is due to cross-pollination, favored mainly by bees.…”

Section: Discussionmentioning

confidence: 99%

Effects of Organic and Conventional Cultivation on Composition and Characterization of Two Citrus Varieties ‘Navelina’ Orange and ‘Clemenules’ Mandarin Fruits in a Long-Term Study

et al. 2023

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A transition towards an organic food system is taking place around the world. This process is favored by growing consumer demand, who associate organic crops with being healthier, tastier, and safer for the environment than conventional crops. Citrus is one of the most widely produced crops worldwide and has important socio-economic and cultural significance in the Mediterranean area. The aim of this work is twofold; on the one hand, it reveals the variability of a set of physical–chemical and nutritional quality parameters of two citrus fruit varieties, ‘Navelina’ oranges and ‘Clemenules’ mandarins, from organic and conventional production in a long-term study. On the other hand, taking advantage of the large number of results, a model is proposed that allows the successful differentiation of citrus fruits from organic and conventional production and a tool that allows predicting the production system of citrus fruits. The results suggest that organically produced citrus fruits do not generate differences in terms of external aspects, providing fruits that are acceptable to the market. Organic production techniques influenced the lower peel content and higher pulp and juice content in ‘Navelina’ orange and ‘Clemenules’ mandarin fruits and led to a greater ability to synthesize vitamin C in the juice, more essential oils in the skin, and higher seed numbers, although in all cases, the fruits can be classified as having low seed numbers. Two discriminating equations were obtained that use easy-to-measure parameters to successfully classify organic citrus fruits. The classification and prediction models obtained constitute useful tools to help in the control of the purity/authenticity of organic citrus fruits.

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“…Vitamin C content in plants can vary depending on environmental and developmental cues such as the photosynthetic process, relative humidity, oxidative stress, and temperature (Gomez and Lajolo 2008;Wang et al 2014). As documented in 'Kinnow' mandarin and 'Gunda Gundo' orange, differences in jujube tree age among various locations could also be another factor affecting the synthesis of vitamin C (Aregay et al 2021;Khalid et al 2016). Because jujube trees at Alcalde, Los Lunas, and Las Cruces were planted in 2011, 2012, and 2017, respectively, tree age may affect the synthesis of different bioactive compounds and should be investigated in future studies.…”

Section: Discussionmentioning

confidence: 99%

Dynamics of Nutrients in Jujube (Ziziphus jujuba Mill.) at Different Maturity Stages, Cultivars, and Locations in the Southwest United States

Sapkota

Delgado

VanLeeuwen

et al. 2023

horts

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Jujube (Ziziphus jujuba Mill.) is also called Chinese date. There are ∼100 jujube cultivars with limited commercial availability, and the majority of them have scant details in the United States. In this study, nutrient dynamics during fruit maturation of different jujube cultivars grown at Las Cruces, Los Lunas, and Alcalde, NM, were examined in 2018 and 2019. Cultivars varied by location and year, and included ‘Li’, ‘Lang’, ‘Sugarcane’, ‘September Late’, and ‘Sherwood’. Parameters tested were total phenolic content (TPC), proanthocyanidins (PAs), vitamin C, cyclic adenosine monophosphate (cAMP), and antioxidant capacity: 2,2-diphenylpicrylhydrazyl radical scavenging capacity and ferric reducing antioxidant potential (FRAP). Moisture, TPC, PAs, FRAP, and vitamin C content decreased with fruit maturity; however, the latter stage of fruit maturity showed an increase in cAMP. Compared with fruit at full-red maturity, creamy fruit had TPC, PA, FRAP, and vitamin C concentrations that were 1.0 to 1.8, 4.4 to 12.4, 1.9 to 2.6, and 0.1 to 1.3 times higher, respectively, depending on location (P < 0.05). From creamy to full-red maturity, cAMP increased by 0.9 to 4.5 times. At full-red maturity, estimated TPC in jujube fruit ranged from 10.6 to 16.8 mg gallic acid equivalent per gram dry weight (DW), whereas estimated PAs ranged from 1.8 to 5.3 mg PA B2/g DW. Jujube fruit at full-red maturity had a vitamin C content that ranged from 649.0 to 1153.3 mg/100 g DW. At full-red maturity, the concentration of cAMP ranged from 148.1 to 277.6 μg/g DW in Las Cruces samples.

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Tree Age and Harvesting Season Affected Physico-chemical and Bioactive Compounds of Elite Type of Gunda Gundo Orange (Citrus Spp) in the Northern Ethiopia

Cited by 9 publications

References 51 publications

Nutritional and Antinutritional Potentials of Sorghum: A Comparative Study among Different Sorghum Landraces of Tigray, Northern Ethiopia

Nutritional and Antinutritional Potentials of Sorghum: A Comparative Study among Different Sorghum Landraces of Tigray, Northern Ethiopia

Effects of Organic and Conventional Cultivation on Composition and Characterization of Two Citrus Varieties ‘Navelina’ Orange and ‘Clemenules’ Mandarin Fruits in a Long-Term Study

Dynamics of Nutrients in Jujube (Ziziphus jujuba Mill.) at Different Maturity Stages, Cultivars, and Locations in the Southwest United States

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