Films and coatings from pequi mesocarp incorporated with nano-ZnO: Properties and capacity to increase mango shelf life

Guerra, Itatiane Catarina; Sousa, Tainara Leal de; Farias, Patrícia Marques de; Cappato, Leandro P.; Freitas, Bheatriz Silva Morais de; Romani, Viviane Patrícia; Plácido, Geovana Rocha

doi:10.1016/j.indcrop.2023.116414

Cited by 12 publications

(3 citation statements)

References 59 publications

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“…Pequi has a high nutritional and phytochemical composition with food and medicinal properties. Pequi is called the gold standard of the Brazilian Cerrado, given the significant contributions to its cultivation region [74].…”

Section: Future Perspectives On the Valorization Of Pequi And Its Der...mentioning

confidence: 99%

Potential Challenges of the Extraction of Carotenoids and Fatty Acids from Pequi (Caryocar brasiliense) Oil

Carneiro

Alhaji

Silva

et al. 2023

Foods

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Pequi is a natural source of bioactive compounds with wide versatility for fresh or processed fruit consumption, but it is still little explored economically. Functional foods are the subject of diverse scientific research since, in addition to being nourishing, they contain bioactive compounds capable of promoting several benefits to the human body. Pequi is a fruit species native to the Brazilian Cerrado, which is rich in oil and has components with a high nutritional value, such as unsaturated fatty acids (omega-3, omega-6, EPA, and DHA), antioxidants (carotenoids and phenolic compounds), and vitamins. Therefore, the present narrative review aims to compile and critically evaluate the methods used to extract oil from the pulp and almonds of pequi and describes the carotenoid separation from the oil because carotenoids are natural pigments of great interest in the pharmaceutical and food industries. It is emphasized that the main challenges linked to bioactive compound extraction are their susceptibility to degradation in the processing and storage stages of pequi and its derived products.

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Section: Future Perspectives On the Valorization Of Pequi And Its Der...mentioning

confidence: 99%

Potential Challenges of the Extraction of Carotenoids and Fatty Acids from Pequi (Caryocar brasiliense) Oil

Carneiro

Alhaji

Silva

et al. 2023

Foods

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“…6,7 However, bioplastics correspond to less than 1% of the global plastic packaging sales. 4 Biodegradable films can have active properties (antimicrobial or antioxidant activity), 8,9 offering an additional feature when compared to conventional plastics. In practice, active packaging refers to incorporating or immobilizing certain bioactive compounds in the polymeric matrix, allowing them to interact with the food and the environment.…”

Section: Introductionmentioning

confidence: 99%

Use of chemically treated nopal cladodes as additive in the cassava starch composite films

De Farias,

De Vasconcelos,

Ferreira

et al. 2023

Vinyl Additive Technology

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Nopal cladodes (NC) are considered a source of fibers and bioactive compounds with high antioxidant properties, so their application as biofiller and bioactive agent in starch films has generated interest. To improve NC incorporation into starch film, NC was chemically treated at different pH values (7, 8, 9, 10, 11, and 12). The physical, mechanical, and active properties of cassava starch/NC composite films were evaluated. Increasing the alkaline treatment of NC, the composite films were more homogeneous, less hydrophilic, more elongable and less mechanically resistant. Thus, alkaline NC treatment at pH 12 yielded the most elongable (72.3%) and hydrophobic (contact angle = 71.8°), but the least mechanically resistant (1.7 MPa) cassava starch/NC film. Meanwhile, alkaline treatment of NC at pH 11 provided films with better functional properties and antioxidant properties, as measured by DPPH• (74.6%) or ABTS•+ (16.6 μm Trolox/g of film) radical scavenging, as well as hydrophobic surface (64.6°) and improved mechanical resistance (2.5 MPa). Nevertheless, the composite cassava starch/NC films obtained here did not exhibit antimicrobial activity. In conclusion, chemical treatment improved the performance of NC to be used as an additive to produce starch composite films less hydrophilic and with antioxidant property that can help to preserve foods sensitive to oxidation (e.g., nuts and dehydrated fruits).Highlights NC flour contains phenolic compounds, protein, lipids, carbohydrate and fibers. Compounds removed in the NC treatment affected the properties of films. Alkaline NC treatment contributed to increase the elongation of composite film. Alkaline NC treatment decreased the hydrophilicity of composite film. NC treated at pH 11 yielded films with suitable properties for food packaging.

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“…Nano zinc oxide (ZnO) is a common inorganic antibacterial agent with good antibacterial effect on most common microorganisms, such as Escherichia coli, Staphylococcus aureus, etc. (Liu et al 2018;Hamid et al 2021;Guerra et al 2023). It is cheap, non-toxic, and environmentally friendly and has been widely used in the field of antibacterial materials and food preservation.…”

Section: Introductionmentioning

confidence: 99%

Starch-based active packaging film and its application

Kang,

Ma,

Sun

et al. 2023

BioRes

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Montmorillonite (MMT) was used to improve the performance of starch and nano-ZnO was added to act as antibacterial agent for developing a starch-based active packaging material via solution mixing and casting methods. The effect of MMT and ZnO on the performance of starch films was investigated, and then the composite films were used for cherry preservation. The results indicated that the addition of MMT could improve the mechanical and water-vapor barrier properties of starch films, but it had only a slight impact on optical properties. However, the addition of nano-ZnO could reduce the optical, mechanical, and water vapor barrier properties of composite films. In preservation applications, compared to the other films, the composite films containing nano-ZnO could be beneficial to maintain quality and nutritional value of cherries by slowing down the growth of bacteria and thereby delaying weight loss, decreasing hardness, and decreasing pH and soluble solid content, resulting in a better preservation effect. Therefore, a starch-based active packaging film with good properties and preservation effect was developed with nano-ZnO and MMT, which could be applied in the field of preservation.

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Films and coatings from pequi mesocarp incorporated with nano-ZnO: Properties and capacity to increase mango shelf life

Cited by 12 publications

References 59 publications

Potential Challenges of the Extraction of Carotenoids and Fatty Acids from Pequi (Caryocar brasiliense) Oil

Potential Challenges of the Extraction of Carotenoids and Fatty Acids from Pequi (Caryocar brasiliense) Oil

Use of chemically treated nopal cladodes as additive in the cassava starch composite films

Starch-based active packaging film and its application

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