Biophysical characterization of autochthonous and new apple cultivar surfaces

Bohinc, Klemen (author), Štukelj, Roman (author), Abram, Anže (author), Jerman, Ivan (author), Van de Velde, Nigel Willy (author), Vidrih, Rajko (author)

Apples have long been known for their beneficial effects on human health due to the presence of various bioactive compounds. It is therefore very important to understand the biophysical properties of apple cuticle that dictate apples’ storability and quality. The purpose of this work was to determine the roughness, hydrophobicity, surface potential, and color of various autochthonous and new apple cultivars. The surface roughness was measured by optical profilometer, hydrophobicity by tensiometer, zeta potential by electro kinetic analyser, and surface color by chroma meter. Measurements reveal that the new cultivar Elstar has the roughest surface while the autochthonous cultivar Crown Prince Rudolph has the lowest roughness. Under normal physiological conditions, all apple surfaces were negatively charged, with Wax apple having the lowest and Crown Prince Rudolph the highest values; most cultivars had an isoelectric point at around pH = 3. The surfaces of the new cultivars were slightly more hydrophobic than those of the autochthonous. We conclude that autochthonous and new apple cultivars differ in biophysical surface properties, which might impact transpiration, bacterial/fungi adhesion and, consequently, apple storage and shelf life potential.

• Language: English
• Keywords: apples, autochthonous cultivar, new cultivar, surface characteristics
• Work type: Article
• Typology: 1.01 - Original Scientific Article
• Organization: ZF - Faculty of Health Sciences; BF - Biotechnical Faculty
• Publication status: Published
• Publication version: Version of Record
• Publication date: 01.01.2022
• Year: 2022
• Number of pages: 11 str.
• Numbering: Vol 12, iss. 9, art. 2051
• PID: 20.500.12556/RUL-139050
• UDC: 634.11:543.2/.9
• ISSN on article: 2073-4395
• DOI: 10.3390/agronomy12092051
• COBISS.SI-ID: 119426051
• Publication date in RUL: 29.08.2022

Record is a part of a journal

• Title: Agronomy
• Shortened title: Agronomy
• Publisher: MDPI
• ISSN: 2073-4395
• COBISS.SI-ID: 522953241

Licences

• License: CC BY-NC 4.0, Creative Commons Attribution-NonCommercial 4.0 International
• Link: http://creativecommons.org/licenses/by-nc/4.0/
• Description: A creative commons license that bans commercial use, but the users don’t have to license their derivative works on the same terms.
• Licensing start date: 29.08.2022

Secondary language

• Language: Undetermined
• Keywords: jabolka, avtohtone sorte, nove sorte, površinske lastnosti

Projects

• Funder: ARRS - Slovenian Research Agency
• Project number: J7-2595-2020
• Name: Modulacija polifenolnega profila v sadju s trajnostnimi fizikalnimi poobiralnimi postopki