Uticaj 1-metilciklopropena na kvalitet plodova jabuke sorte „Granny smith“ u zavisnosti od primenjene koncentracije i uslova čuvanja
The Influence of 1-Methylcyclopropene on Fruit Quality of “Granny Smith” Apple Cultivar Depending on Applied Concentration and Storage Conditions
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Author
Magazin, Nenad
Keserovic, Zoran
Milic, Biserka
Miodragovic, Maja
Tarlanovic, Jelena
Keywords
1-MCPULO
NA
čvrstina
skald
firmness
superficial scald
Metadata
Show full item recordAbstract
U radu su prikazani rezultati ispitivanja delovanja 1-metilciklopropena (1-
methylcyclopropene, 1-MCP) na kvalitet plodova jabuke sorte „Granny Smith“. 1-MCP je
inhibitor delovanja etilena koji se veže za receptore etilena i na taj način usporava sazrevanje
plodova i produžava njihovo čuvanje. 1-MCP je primenjen u periodu od 5 dana nakon berbe u
koncentracijama od 0, 500, 1000 i 2000 ppb i to sa i bez prisustva egzogenog etilena
poreklom iz druge zrele jabuke. Nakon tretmana plodovi su smešteni u hladnjaču sa
kontrolisanom atmosferom u dve komore sa različitim sastavom gasova. Analize plodova su
izvedene neposredno nakon iskladištenja, ali i nakon dodatnog čuvanja u komori sa
normalnom atmosferom, kao i nakon čuvanja na sobnoj temperaturi. Rezultati su pokazali da
1-metilciklopropen može u značajnoj meri da pomogne očuvanju kvaliteta jabuke tokom
skladištenja u hladnjačama. Nevezano za primenjenu koncentraciju, 1-MCP značajno utiče na
očuvanje čvrstine ploda, čak i nakon iskladištenja odnosno čuvanja plodova na sobnoj
temperaturi, a pokazalo se i da sadržaj ukupnih kiselina u tretiranim plodovima sporije opada
u odnosu na netretirane plodove. Nije bilo uticaja tretmana na sadržaj rastvorljivih suvih
materija. Sve ispitivane koncentracije 1-MCP-a su efikasno suzbile pojavu posmeđivanja
pokožice zelenih plodova (skald) samo u uslovima kada je tretman vršen u komori bez
prisustva plodova jabuke drugih sorti. U tretmanu sa prisustvom egzogenog etilena, 1-MCP
nije sprečio pojavu skalda. Koncentracija od 500 ppb nije dala zadovoljavajuće rezultate kod
svih ispitivanih parametara, te je preporučljivo da se koristi koncentracija od 1000 ppb.
Koncentracija od 2000 ppb je dala iste rezultate kao i 1000 ppb, pa stoga nema opravdanja za
njenu primenu. The paper presents the results of 1-methylcyclopropene (1-methylcyclopropene, 1-
MCP) influence on fruit quality of “Granny Smith” apple cultivar. 1-MCP is an inhibitor of
ethylene action which binds to the receptors of ethylene and thus delays the maturity of fruit,
and prolongs their storage. 1-MCP is applied in a period of 5 days after harvest at
concentrations of 0, 500, 1000 and 2000 ppb, each with and without the presence of
exogenous ethylene from other ripe apples. After treatment, the fruits were stored in cold
storage with controlled atmosphere (CA) in two separate chambers with different composition
of the gases. Fruits analyses were made immediately after CA storage, after additional storage
in normal atmosphere, and after room temperature shelf life. The results showed that 1-
methylcyclopropene can significantly help preserve the quality of apple during cold storage.
Irrespective of the applied concentration 1-MCP significantly affects retention of fruit
firmness even during shelf life, and also affects the total acids (TA) content in the treated
fruits by slowing down drop of TA compared to untreated fruits. There was no treatment
effect on total soluble solids content. All tested concentrations of 1-MCP effectively suppress
the occurrence of superficial scald in circumstances where the treatment is carried out in the
chamber without the presence of other apple cultivars. In the case where the treatment is done
in presence of exogenous ethylene 1-MCP has not prevented scald occurrence. A
concentration of 500 ppb has not yielded satisfactory results with all investigated parameters,
while a concentration of 1000 ppb is recommended to be used. The concentration of 2000 ppb
gives the same results as 1000 ppb and there is no justification for its application.