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The aim of 3 -year experiment was to evaluate quality and chemical composition of blue honeysuckle berries cultivar 'Czarna' and non-specified seedling "N" as de­pendent on time of ripening. The results obtained showed that berries harvested later were bigger but less firm. Furthermore, an increase of soluble solids content was observed in fruit of both cultigens at the end of harvest (for seedling "N" from 11 to 13.5% and for 'Czarna' from 9.8% to 12.6%). On the other hand, for late-harvested berries of both cultigens 20% decrease of titratable acidity and vitamin C was noticed. In berries of seedling "N" at the beginning of harvest 232 mg 100 g-1 of total polyphe­nols was determined, whereas the late ripening fruit contained 284 mg 100 g-1 of total polyphenols. Similar relation was observed in 'Czarna' berries (an increase from 164 mg 100 g-1 to 221 mg 100 g-1). The berries of late harvest contained more antho- cyanins (167 mg 100 g-1 in 'Czarna' and 227 mg 100 g-1 in seedling "N") as compared to early collected ones (122 and 173 mg 100 g-1 for, 'Czarna' and "N", respectively). Hydroxycinnamic acids content varied from 37.0 to 29.3 mg 100 g-1, respectively, for early and late collected berries of seedling "N" and from 22.3 mg 100 g-1 to 26.6 mg 100 g-1 for early and late harvested berries of 'Czarna'. Among flavonols, quercetin-3-rutinoside, quercetin-3-glucoside and two unidentified flavonols with retention times 26 min and 32 min, were determined. Luteolin 7-O-a-glucoside content varied from 4.59 to 7.05 mg 100 g-1 in the early and late harvested berries of seedling "N" and from 3.12 mg 100 g-1 in the early to 4.25 mg 100 g-1 in the late harvested berries of 'Czarna'.
The investigation aimed at assessing the quality and storability of 'Golden Deli­cious' apples. The experiment was performed in two storage seasons (2006/2007 and 2007/2008). Fruit treated with 1-methylcyclopropene (1-MCP) and untreated fruit were stored at 1°C in normal atmosphere (NA), and in three combinations of con­trolled atmosphere (CA) with the gaseous composition of CO2:O2 - 1.5:1.5; 3.0:3.0; and 5.0:3.0. Fruit quality was assessed after 2, 4 and 6 months of storage; both imme­diately after storage and after 7 days of being kept at room temperature. In the ex­periment a drastic inhibition of the intensity of ethylene production in apples treated with 1 -MCP was noted, regardless of the conditions and the length of storage time. Treating fruit with 1-MCP as well as their storage in controlled atmosphere conditions resulted in higher flesh firmness of apples, both directly after storage and after 7 days at room temperature. In the first 4 months of storage the effect of 1 -MCP treatment on fruit quality was clearly more visible in NA than in CA. With the prolongation of storage time a constant decrease of titratable acidity in apples was observed. The rate of this process was significantly slower in the case of fruits stored in controlled atmosphere than in normal atmosphere. The differences between these storage technologies were even more visible after the shelf life than directly after storage. The post-harvest treatment of apples with 1-MCP, substantially limited the decrease of apple titratable acidity, especially under the NA conditions. Fungal diseases (grey mould rot, bull's eye rot and blue mould rot) occurred mostly on fruits stored in normal atmosphere. Treating apples with 1 -MCP usually decreased the per­centage of rotten fruits both directly after storage and after the shelf life period.
The study was carried out during the two storage seasons of 2008/2009 and 2009/2010. The subject of this study was the checking of the influence of the harvest dates being 4-days apart, and checking of the different storage conditions (CA 0.8% CO2:2% O2, CA 2% CO2:2% O2, CA 3% CO2:3% O2 and NA - normal atmosphere) on the selected quality parameters of 'Concorde' pears. The pears were first stored for 150 days in 0-0.5 oC. Once the fruit was out of the storage it was stored in simulated shelf-life conditions for an additional 7 days at a temperature of 17 oC. An evaluation of pear quality was conducted after each harvest date, after taking them out of the cold storage and after simulated shelf-life. Flesh firmness, soluble solids content and titratable acidity were determined, and pear health was evaluated. Harvest date had a significant impact on the maturity of fruit, and values of the investigated quality parameters of pears, during the harvest. During the subsequent harvests, the value of the starch index and soluble solids content in pears increased, whereas Streif's matur­ity index, flesh firmness and titratable acidity decreased. Harvest date and storage conditions also had a significant influence on the investigated qualitative attributes of pears determined after storage, and the simulated shelf-life period. Pears stored in controlled atmosphere conditions were firmer and had higher titratable acidity than fruit stored in common cold storage. Delay in the harvest date resulted in fast soften­ing of fruit, significant reduction of titratable acidity, and higher susceptibility to putrefaction caused most of all by the gloeosporium rot. A serious problem observed during long term storage of 'Concorde' pears was sensitivity to flesh damage caused by CO2, and high susceptibility to senescent scald.
A field experiment was carried out during 2017–2018 in the Horticulture Research Station farm in El Kanater El Khayreia, El Kalubeia Governorate, Egypt, to find out the response of foliar application of melatonin, GA3 and NAA on vegetative and fruit attributes of ‘Canino’ apricot. Different plant growth regulators influenced all variable parameters related to vegetative growth and fruit. Results revealed that between all growth regulators, the foliar application of melatonin following by GA3 there was the highest vegetative growth as compared to other treatments, while GA3 gave the highest yield following by melatonin as compared to other treatments. Treatment with NAA improved vegetative growth, yield and fruit quality to a lesser extent as compared to the control.
Celem badań była ocena wybranych cech jakościowych takich, jak: wartość sensoryczna, zawartość kwasu L(+) mlekowego, kwasowość miareczkowa oraz przeżywalność 10 szczepów bakterii z rodzaju Bifidobacterium w ciągu 21 dni przechowywania w nieukwaszonym i ukwaszonym mleku bifidusowym. W wyniku przeprowadzonych badań stwierdzono, że jedynie chłodnicze warunki przechowywania mleka bifidusowego zapewniają utrzymanie prawidłowej jakości produktu. Wszystkie badane szczepy produkują prawie wyłącznie izomer L(+) kwasu mlekowego. Udział procentowy tego kwasu w całej puli kwasu mlekowego wynosi po 21 dniach niezależnie od warunków przechowywania powyżej 90%.
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