Chemical composition of five loquat cultivars planted in Brazil

Hasegawa, Patricia; Faria, Adelia Ferreira de; Mercadante, Adriana Zerlotti; Chagas, Edvan Alves; Pio, Rafael; Lajolo, Franco Maria; Cordenunsi, Beatriz Rosana; Purgatto, Eduardo

doi:10.1590/s0101-20612010000200040

Cited by 38 publications

(25 citation statements)

References 6 publications

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“…Mizumo showed total carotenoid and alltrans-b-carotene contents about two times significantly higher than those found in Centená ria. Furthermore, these cultivars showed other differences, in respiratory activity, ethylene production and chemical composition, according to results not published (Hasegawa et al,2009). …”

Section: Quantitative Compositionmentioning

confidence: 81%

Cultivar influence on carotenoid composition of loquats from Brazil

Faria

Hasegawa

Chagas

et al. 2009

Journal of Food Composition and Analysis

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Section: Quantitative Compositionmentioning

confidence: 81%

Cultivar influence on carotenoid composition of loquats from Brazil

Faria

Hasegawa

Chagas

et al. 2009

Journal of Food Composition and Analysis

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“…Trees of the Rosaceae family are unusual in that they synthesise both sorbitol and sucrose in their source leaves, and both are translocated and stored (or utilized) in their fruit. The principal sugars in loquat fruit are fructose, glucose, sucrose, and sorbitol (sugar alcohol) (Shaw and Wilson 1981;Bantog et al 1999;Hasegawa et al 2010;Qin et al 2013). Although the balance varies among cultivars, sucrose accounts for up to 35 % of the total during early fruit development, around 40 % at maturity (Bantog et al 1999;Qin et al 2012Qin et al , 2013 Hence, sucrose is of great importance not only physiologically (for fruit development) but also organoleptically (it dominates the flavour of mature loquat fruit).…”

Section: Introductionmentioning

confidence: 99%

Overexpression of a loquat (Eriobotrya japonica Lindl.) vacuolar invertase affects sucrose levels and growth

Wang

Feng²,

Qin

et al. 2015

Plant Cell Tiss Organ Cult

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Sucrose and its cleavage products are essential molecules in higher plants. Vacuolar invertase (VIN) is a type of invertase that is specifically localised in the vacuole. It irreversibly cleaves sucrose into glucose and fructose, and plays important roles in sugar accumulation or cell expansion. In this study, a full-length cDNA of the VIN gene, EjVIN, was isolated from loquat (Eriobotrya japonica Lindl.). The EjVIN encoding protein possesses typical and highly conserved motifs among plant VINs, including the b-fructosidase motif (NDPNG), catalytic domain (WECVD) and a possible vacuolar targeting motif (ILPN). Phylogenic analyses showed that EjVIN is close to apple and pear VIN, falling within the VIN subgroup. EjVIN transcript and acid invertase activity were highest in the early stages of fruit development and in mature fruit.The transcript of EjVIN was significantly enhanced in vivo after 3 h of treatment with fructose or glucose. The transgenic tobacco plants overexpressed EjVIN grew faster with decreased size. Further analyses indicate that the sucrose levels were decreased, but fructose levels were slightly increased in immature transgenic plants compared with wild type plants. The results indicate that EjVIN play more important role during early loquat fruit development stage. Overexpression of loquat EjVIN accelerated sucrose hydrolysis, affected plant growth, which possibly due to a modification of the metabolic fluxes in the transgenic plants at early development stage.

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“…As nêsperas são ricas em ácido galacturônico, málico e fumárico, flavonoides, carotenoides e outros compostos antioxidantes, localizados na casca e na polpa dos frutos (Faria et al, 2009;Ferreres et al, 2009). Além disso, possui elevada concentração de pectina, o que vem a favorecer o processamento industrial na fabricação de doces e geleias, atividade ainda não explorada comercialmente (Hasegawa et al, 2010).…”

Section: Introductionunclassified