Different Citrus rootstocks present high dissimilarities in their antioxidant activity and vitamins content according to the ripening stage

Abstract

Abstract"Lane Late" sweet orange grafted on six different citrus rootstocks and grown in the Guadalquivir valley (Seville, Spain) were picked at different ripening stages in two consecutive seasons to characterize their antioxidant activity (free radicals scavenging activity, reducing power and lipid peroxidation inhibition) and quantify their main antioxidant compounds (vitamin E and vitamin C). Linear discriminant analysis and 2-way ANOVA were applied to compare the effects induced by citrus rootstock and ripening stage. The results showed that differences in antioxidant activity and related compounds are mainly dependent on the citrus rootstock, despite ripening stage had also some particular effects. Changes observed in 2012 showed less marked differences among the citrus rootstock. Nevertheless, Cleopatra rootstock showed the highest antioxidant activity in both years, indicating that an increase in its cultivation might be a good solution to sweet orange farmers. Concerning the ripening stage, samples collected in January presented higher vitamin contents, while those collected in April showed higher antioxidant activity. This result allows deciding the harvesting period according to the desired effect.

Characterization of Extra Early Spanish Clementine Varieties (Citrus clementina Hort ex Tan) as a Relevant Source of Bioactive Compounds with Antioxidant Activity

“…Regarding vitamin E, α-, β-, γ-, and δ-tocopherol were detected (Table 7), with the prevalence of α-tocopherol, representing more than 90% of the vitamin E vitamers (beta, gamma, and delta tocopherol) in all the varieties studied. The results obtained from the α-tocopherol content in the analyzed clementines are comparable to those previously reported by other authors in different citrus varieties, such as sweet orange (Citrus sinensis (L.) Osbeck) [29]. Table 7.…”

“…Overall, the antioxidant activity of all the samples can be considered satisfactory and similar with results reported in other citrus fruits like sweet orange [29,45] or pummel (Citrus grandis Osbeck) [1,46].…”

Pengaruh Penyambungan Plantlet Jeruk Siam Kintamani (Citrus nobilis Lour.) yang Diregenerasi Melalui Embriogenesis Somatik Terhadap Pertumbuhan dan Produksi Tanaman

“…Menurut Castle (1995), faktor utama yang berpengaruh terhadap kualitas buah adalah sifat genetik dari mata tempel atau batang atas tanaman, sedangkan faktor pendukung utamanya adalah iklim, pengaturan kanopi tanaman, nutrisi, aplikasi budidaya lainnya, dan jenis batang bawahnya (Melgar 2014). Lebih jauh Bermejo & Cano (2012) mengatakan bahwa spesifik kombinasi batang bawah dengan batang atas akan berpengaruh pada kadar TPT, keasaman, warna, aroma, serta kandungan vitamin, dan aktivitas anti oksidan di dalam buah (Cardenosa et al 2015).…”

“…Ketuaan atau saat petik buah juga memberi pengaruh yang besar pada kualitas buah (Riaz et al 2015, Cardenosa et al 2015, Iqbal et al 2012. Kandungan gula, ratio TPT, keasaman, kandungan jus dan pH cenderung naik seiring dengan bertambahnya tingkat ketuaan buah.…”

The Timeless Contribution of Rootstocks towards Successful Horticultural Farming: From Ancient Times to the Climate Change Era

“…They may also enhance the levels of various particular health-promoting substances Turhan et al, 2011;Chavez-Mendoza et al, 2013. Krumbein, 2013Legua et al, 2014;Cardenosa et al, 2015) or decrease those of health hazardous ones (e.g., organic pollutants) . Secondly, postharvest storage and shelf life of fruits and vegetables are also rootstock-dependent (D'Hallewin et al, 1993;Ritenour et al, 2004).…”