Title
Characteristics of ripened Tronchón cheese from raw goat milk containing legally admissible amounts of antibiotics
Date Issued
01 April 2019
Access level
open access
Resource Type
journal article
Author(s)
Universitat Politècnica de València
Publisher(s)
Elsevier Inc.
Abstract
The aim of this study was to evaluate the transfer of the most widely used antibiotics in dairy goats from milk to cheese as well as their effect on the cheese-making process and cheese characteristics during ripening. Antibiotic-free milk was spiked individually with 7 veterinary drugs (amoxicillin, benzylpenicillin, cloxacillin, erythromycin, ciprofloxacin, enrofloxacin, and oxytetracycline) at an equivalent concentration of the European Union maximum residue limit. Spiked goat milk was used to make mature Tronchón cheeses, which were analyzed at 0, 30, and 60 d of maturation to determine pH, chemical composition, proteolytic and lipolytic activities, and color and textural properties. A sensory evaluation of 60-d ripened cheeses was carried out. Cheeses from raw antibiotic-free goat milk were made simultaneously to be used as reference. The cheese-making process was unaffected by the presence of most antibiotics evaluated. Only erythromycin and oxytetracycline significantly increased the time required for cheese production (122 ± 29 and 108 ± 25 min, respectively). However, variable amounts of antibiotics, ranging from 7.4 to 68%, were transferred from milk to cheese, with oxytetracycline and quinolones showing the highest retention rates. In general, antibiotic residues present in the cheeses at the beginning of maturation decrease significantly along time. Thus, β-lactams and erythromycin residues were not detectable after 30 d of ripening. However, relatively high concentrations of enrofloxacin (148 ± 12 µg/kg) and ciprofloxacin (253 ± 24 µg/kg) residues were found in the cheeses after 60 d of maturation. The quality characteristics of the Tronchón cheeses were only slightly affected by such substances, with few significant differences in the free fatty acid concentration and color and textural properties of the cheeses. Results herein indicate that the use of goat milk containing antibiotics, such as quinolones, at the European Union maximum residue limit for cheese production could adversely affect the safety of the final products because relatively high concentrations of these substances could be retained in soft and semi-mature cheeses, making it necessary to assess the risk for consumer health. Studies on the partition of the antibiotic substances during cheese-making, using specific technologies, would be convenient to guarantee the safety of cheese and related products.
Start page
2941
End page
2953
Volume
102
Issue
4
Language
English
OCDE Knowledge area
Ciencia animal, Ciencia de productos lácteos
Subjects
Scopus EID
2-s2.0-85061766911
PubMed ID
Source
Journal of Dairy Science
ISSN of the container
00220302
Sponsor(s)
This work is part of the AGL-2013-45147-R Project funded by Ministerio de Ciencia e Innovación (Madrid, Spain). P. Quintanilla thanks Universitat Politècnica de València (Valencia, Spain) for the grant received for the development of this work (PAID-2014, UPV).
Sources of information:
Directorio de Producción Científica
Scopus