Search Results

You are looking at 71 - 80 of 2,226 items for :

  • Refine by Access: All x
Clear All
Free access

Zhengke Zhang, Runshan Fu, Donald J. Huber, Jingping Rao, Xiaoxiao Chang, Meijiao Hu, Yu Zhang, and Nina Jiang

‘Fupingjianshi’ persimmon ( Diospyros kaki L.) is one of the important astringent persimmon cultivars in northwest China. The cultivar is very fast to ripen at ambient temperature after harvest. Softening is a very important feature of persimmon

Free access

J.J. Mangas, E. Dapena, M.S. Rodriguez, J. Moreno, M.D. Gutiérrez, and D. Blanco

Water-soluble pectin (WSP), chelator-soluble pectin (CSP), and hydrochloric acid-soluble pectin (HASP) were monitored in five Asturian apples (Malus domestics Borkh.) throughout ripening. The alcohol-insoluble solid content was found to decrease during ripening, while those of the WSP and CSP fractions increased in the final stages of ripening. This increase was probably at the expense of the HASP content, which had decreased by the end of the ripening period.

Free access

Hassan Hajnajari, Bahaeddin Chashnidel, Kourosh Vahdati, Mohsen Ebrahimi, Alireza Nabipour, and Esmaeil Fallahi

; Segura et al., 2006 ). Traits of blooming and ripening dates ( Hansche et al., 1966 ; Kester, 1965 ; Tancred et al., 1995 ) and fruit quality ( Brown, 1960 ; Dicenta et al., 1993 ; Kester et al., 1977 ) have been widely used for study of their

Free access

John C. Beaulieu and Mikal E. Saltveit Jr.

The content of acetaldehyde (AA) and ethanol (EtOH) increases in ripening climacteric fruit. Application of EtOH inhibits tomato (Lycopersicon esculentum) fruit ripening without affecting subsequent quality, and AA enhances organoleptic quality. AA inhibited ripening of mature-green tomato discs (MGTD) at about 30% conc of EtOH. The relationship between EtOH and AA inhibition of tomato fruit ripening is unclear. The inter-conversion of AA and EtOH is catalyzed by alcohol dehydrogenase (ADH) which is inhibited by 4-methylpyrazole (4-MP). No adverse physiological effects upon ripening were observed in MGTD receiving 20 μL of 4.0 mM 4-MP. Treating MGTD with 0.5 to 4.0 mM 4-MP in concert with AA (≤2.0 μL/g FW) or EtOH (≤8 μL/g FW) was not deleterious to ripening. A rapid, efficient method for the analysis of tissue AA and EtOH was linear (r2 = 0.97) for discs spiked with 0 to 45 μL EtOH. No temporal (0 to 42 h) changes in tissue AA and EtOH were detected in MGTD receiving 2.0 mM 4-MP. MGTD treated with 2.0 mM 4-MP and 8 μL/g FW EtOH had a 360-fold increase in AA after 6 days of ripening, but had no differences on EtOH conc. These conditions maximally inhibited ripening as determined by lycopene content.

Free access

Sogo Nishio, Masahiko Yamada, Yutaka Sawamura, Norio Takada, and Toshihiro Saito

; Segura et al., 2009 ; Zhang et al., 2010 ). Because important target traits such as fruit ripening time, fruit weight, and sugar content are quantitative, the fluctuation of phenotypic values with environmental conditions hinders the identification of

Free access

Angelos I. Deltsidis, Charles A. Sims, and Jeffrey K. Brecht

firmness, with less focus on flavor and texture qualities ( Tieman et al., 2017 ). Also, a few studies have shown that the common practice of harvesting tomato fruit before ripening initiation and at early ripeness stages negatively affects the sensory

Free access

Wesley R. Autio

The effects of rootstock on `Delicious' (Malus domestics Borkh.) apple ripening, quality, size, mineral composition, and storability were studied over 4 years. Removal of the effects of crop load by analysis of covariance suggested that M.27 EMLA advanced fruit ripening and that M.7 EMLA delayed fruit ripening. Ott.3, M.9, MAC 9, OAR 1, M.9 EMLA, and M.26 EMLA either were inconsistent in their effects on ripening or consistently-resulted in an intermediate time of ripening. Fruit size consistently was largest from trees on M.9 EMLA and smallest from trees on OAR 1. Fruit from trees on MAC 9 generally had relatively high Ca contents, and fruit from trees on OAR 1 had relatively low Ca concentrations. The effects of rootstock on storability appeared to be related to their effects on maturity arid Ca levels.

Open access

Alejandra Ferenczi, Nobuko Sugimoto, and Randolph M. Beaudry

amount and composition throughout ripening and senescence (Drawert et al., 1969 ; Williams and Knee, 1977 ). The ester profile at any given time is influenced by substrate availability (Knee and Hatfield, 1981 ; Wyllie and Fellman, 2000 ), AAT

Free access

M. Hossein Behboudian and Colin Tod

The effect of preharvest CO2 enrichment (1000 μl·liter–1) on postharvest quality of tomato fruit (Lycopersicon esculentum Mill. `Virosa') was studied with an emphasis on soluble sugars, ripening, and mineral composition. High-CO2 fruit had higher concentrations of sucrose, glucose, fructose, and total soluble solids than ambient-CO2 fruit. High-CO2 fruit also ripened more slowly and was characterized by lower respiration and ethylene production rates than ambient-CO2 fruit. Concentrations of N, P, and K were lower in the high-CO2 fruit than in the ambient-CO2 fruit, whereas those of S, Ca, and Mg were the same for both treatments. Preharvest CO2 enrichment of `Virosa' tomato enhances fruit desirability in terms of slower postharvest ripening and higher concentrations of soluble sugars and total soluble solids.

Open access

Nihad Alsmairat, Philip Engelgau, and Randolph Beaudry

ripening is associated with the increased synthesis of citramalic acid, which may contribute to a new pathway for isoleucine and BC ester synthesis in apple ( Sugimoto et al., 2011 , 2015 ). In banana fruit, the amino acids valine and leucine have been