Cristina Nerin - Academia.edu (original) (raw)

Papers by Cristina Nerin

Flavour and Fragrance Journal

Recently, there has been a growing interest in natural products of plant origin as herbal remedie... more Recently, there has been a growing interest in natural products of plant origin as herbal remedies. In this study, the profile of bioactive volatile organic compounds and odorous compounds in a sample of Pistacia lentiscus L. vegetable oil has been determined. The study indicated that the oil extraction yield is influenced by the method, the extraction conditions, the stage of maturity of plant and the sampling area. Analysis by HS‐SPME‐GC–MS and GC–MS showed that monoterpenes and sesquiterpenes represent the most numerous groups among the 57 compounds identified. The most abundant compounds are beta‐myrcene, d‐limonene and linoleic acid ethyl ester. Among other compounds humulene, caryophyllene, a‐muurolene and copaene have been detected known for facilitating wound healing. Moreover, β‐caryophyllene and α‐humulene with anti‐inflammatory effects have been determined. 38 different odorous compounds with herbal, citrus and vegetable aromas were detected by panellists using HS‐SPME‐GC...

Food Packaging and Shelf Life

Jornada de Jóvenes Investigadores del I3A, 1970

The determination of sterols in human serum allows the diagnosis of inherited disorders in choles... more The determination of sterols in human serum allows the diagnosis of inherited disorders in cholesterol metabolism and the evaluation of cardiovascular disease risk. Ten sterols were included in this work: desmosterol and lanosterol (cholesterol precursors); stigmasterol, cholestanol, campesterol, sitosterol and sitostanol (phystosterols) and 7-α-hydroxy 4-cholesten-3-one, 24-hydroxycholesterol and 27-hydroxycholesterol (oxysterols). Historically, sterols have been analyzed by gas chromatography, which involves laborious and time-consuming derivatization steps. Nowadays, liquid chromatography coupled to mass spectrometry has also been used for the analysis of sterols in serum and mammalian cells and tissues.The aim of this study is to reduce the sample processing time of the determination of sterols in human serum.Two different approaches have been compared: an off-line and on-line system. Both methods need a suitable cartridge for cleaning the sample before its subsequent chromatogr...

Analytical and Bioanalytical Chemistry, 2016

Analytical and Bioanalytical Chemistry, 2007

Journal of Chromatography A, 2016

Jornada de Jóvenes Investigadores del I3A

Within the scope of sustainability, this work tackles both food waste and food safety by studying... more Within the scope of sustainability, this work tackles both food waste and food safety by studying the ethylene scavenging potencial of α-cyclodextrin nanosponges produced by solvent-free synthesis and the food safety evaluation of the compostable packaging for food contact applications where the nanosponges will be incorporated.

Journal of Hazardous Materials

New bamboo-based biopolymers are being used as food packaging materials, but it must be evaluated... more New bamboo-based biopolymers are being used as food packaging materials, but it must be evaluated in order to ensure consumers safety. In this study, migration from a commercial bamboo-based biopolymer to three different food simulants (ethanol 10% v/v, acetic acid 3% w/v and ethanol 95% v/v) was studied.. The migrants were determined from three different perspectives. Volatile and semi-volatile compounds were analysed by gas chromatographymass spectrometry (GC-MS).Twenty-five volatile and semi-volatile compounds were detected., In addition, a number of phytosterols were detected in ethanol 95%. Non volatile 2 compounds were identified and quantified by ultra performance liquid chromatographycoupled to time-of-flight mass spectrometry (UPLC-Q/ToF). Twelve non-volatile compounds were detected in migration solutions, mainly melamine and its derivatives, coming from polymer resins added to the biopolymer. Melamine migration was higher than 50 mg/Kg in the third sequential migration test.Finally, the migration samples were analyzed by DART-SVP (direct analysis in real time coupled to standardised voltage and pressure). This methodology was able to detect simultaneously the main volatile and non volatile migrants , and the adducts in a very rapid and effective way and shows huge promise as a tool to test for the safety and legal compliance of food packaging materials.

Facta Universitatis - Series: Physics, Chemistry and Technology, 2018

In this work, we exploit the antimicrobial properties of cinnamon and coriander [1] essential oil... more In this work, we exploit the antimicrobial properties of cinnamon and coriander [1] essential oils that are incorporated in cyclodextrin nanosponges to create a stable controlled release system for these oils. For this purpose, cyclodextrin (CD) nanosponges (NS) were loaded with coriander (COO) and cinnamon essential oils (CIO) and evaluated for their antimicrobial activity against common foodborne pathogens both in direct contact as well as in vapour phase. To evaluate the loading capacity of the nanosponges, two SPME-GC-MS methods were successfully validated for the major compounds present in COO and CIO. The results demonstrated that loading was dependent on the type of solvent used and that nanosponges have different affinities for the oils tested as well as for each of their components. The results showed that, for COO, the NS with higher loading capacity were the ones based on β- and HP-β-CD; while for CIO, α- and β-NS were the ones yielding the best encapsulation efficiencies...

This study was carried out to optimize Microwave-assisted extraction (MAE) process and assess the... more This study was carried out to optimize Microwave-assisted extraction (MAE) process and assess the possibility of using Opuntia ficus-indica (OFI) seeds as natural antioxidant additives in food. Box–Behnken design was used to optimize total phenolic contents (TPC) and antioxidant activity DPPH• (AA) extraction conditions. The models were verified and validated and the interactions between the factors were studied. Under the optimal conditions, corresponding experimental values for TPC and AA were 5.22± 0.12 mg GAE/g DW and 2.30±0.27 mg GAE/g DW, respectively. Seven and eight compounds were identified in TPC and AA under optimal conditions, respectively, using High-Performance Liquid Chromatography (HPLC) coupled to Mass Spectrometry (MS) analysis. Ferulic acid glucoside was the most concentrated compounds in the OFI seed extract. Rancimat test showed that OFI seed extract gives the highest oxidative stability with 150 ppm. The presented data could be a reliable guideline for establis...

Trends in Food Science & Technology, 2021

Background: Nowadays, consumers are more aware about what they eat and how it is packaged. Food q... more Background: Nowadays, consumers are more aware about what they eat and how it is packaged. Food quality is of paramount importance and consumers are eager to be constantly updated about the perishability and shelf-life of the food products they buy. This gave rise to intelligent packaging (IP) materials and devices that can communicate with all people throughout the entire food route. One of the main colour-based IP systems is based on the use of anthocyanin (ATH)-based natural dyes by exploiting their pH-dependent colour changes that can be easily readable by the naked eye. Scope and approach: This review focuses on recent studies regarding ATH-based sensor packaging materials development for IP applications, offering valuable insights regarding the main factors that affect the efficacy of the developed IP, such as the material where the ATH is anchored, ATH type and concentration, the ingredients used in the formulation of the sensor and the storage conditions of the food product. Additionally, the last ATHbased IP developed are also summed and discussed in detail to identify the major bottlenecks that need to be overcome for accelerating the commercial application of ATH-based sensors in IP. Key findings and conclusions: Although ATH-based indicators are able to correctly indicate food shelf-life in several products at a laboratory scale, their industrial production is still impaired by the production methods used for this type of sensors. Furthermore, ATHs are labile compounds that require stabilization in the packaging material to yield stable, standardized and durable IP materials.

Acta Parasitologica, 2019

Aim The objective of the present study was to investigate in vitro anticoccidial effect of olive ... more Aim The objective of the present study was to investigate in vitro anticoccidial effect of olive pulp (Olea europaea L var. Chemlal) extract on the destruction of Eimeria spp. oocysts isolated from infected chickens naturally. Materials and methods The olive pulp (OP) powder was stirred manually in aqueous ethanol in preparation for extraction using the microwave-assisted extraction system. The identification of the phenolic compounds was obtained by ultra-highperformance liquid chromatography-mass spectrometry with electrospray ionisation (HPLC-ESI-MS). The treatment of Eimeria oocyst with OP extract and standard compounds (quercetin and oleuropein) leads to their lysis as shown by the release of substances absorbing at 273 nm. Results Our results showed that the maximum number of reduced oocysts was recorded after 8 h of incubation of optimum OP extract, quercetin and oleuropein for different periods of time. Also, the number of Eimeria oocysts decreased considerably with increase concentrations after adding the optimum of OP extract in concentration ranging from 0.023 to 0.371 mg/ ml. Positive correlation between the optimum OP extract concentrations and the number of Eimeria oocysts reduced was R 2 = 0.959. From this in vitro experiment, it can be concluded that the OP extract possesses an anti-Eimeria spp activity. Conclusion To our knowledge, this is the first time that quercetin and oleuropein were tested to evaluate their anticoccidial activity. The findings of this study showed that phenolic compound of OP extract tested separately possesses anti-Eimeria spp. effect. Further studies should be carried out to test its in vivo efficacy of the OP bioactive compounds in broiler chickens.

Jornada de Jóvenes Investigadores del I3A, 2018

Identification of volatile compounds from different virgin polyolefin FCMs was carried out by GC-... more Identification of volatile compounds from different virgin polyolefin FCMs was carried out by GC-MS with both HS-SPME and ultrasonic extraction (UE), with the aim to obtein the most amount of volatile compounds from polyolefin. Seventy compounds were identified with 90% reliability by GC-MS with NIST 14 library, most of them are NIAS.