INCORPORATION OF ESSENTIAL OILS FROM Piper aduncum INTO FILMS MADE FROM ARROWROOT STARCH: EFFECTS ON THEIR PHYSICOCHEMICAL PROPERTIES AND ANTIFUNGAL ACTIVITY

Abstract

Starch is a promising source of biopolymers and the incorporation of essential oils (EOs) into it can improve some biological properties of films. This study aimed at developing and characterizing barrier, biodegradability and optical properties of biopolymeric films made from arrowroot starch and at incorporating EOs from Piper aduncum leaves and inflorescences in order to analyze their antifungal activity against Rhizopus microsporus and Colletotrichum gloeosporioides. The casting method was used for developing arrowroot starch films and incorporating EOs into them. Resulting films exhibited satisfactory barrier properties, low water vapor permeability (WVP), transparency and good barrier property against UV-vis light, besides being 100% biodegradable. In addition, films enriched with EOs at 0.75% and 1.0% revealed promising antifungal activity. Results showed, for the first time, that arrowroot starch enriched with EOs from P. aduncum can potentially be used as an active film due to its excellent physicochemical properties and antimicrobial activity.

Arrowroot starch-based films incorporated with a carnauba wax nanoemulsion, cellulose nanocrystals, and essential oils: a new functional material for food packaging applications

“…The reduction in water solubility of the lms by the addition of the EOs was probably due to the hydrophobic nature of these molecules and their low a nity to water molecules (Ma and Wang 2016) The incorporation of the various concentrations of CEO or MEO did not alter the WVP of the lms. This was similar to the results reported for whey protein lms incorporated with oregano EO (Zinoviadou et al 2009) and AA-based lms incorporated with Piper aduncum EO (Valadares et al 2020).…”

“…Arrowroot (Maranta arundinacea), an unconventional food species native to Latin America, has a high amylose-based starch content in its rhizome. Amylose-rich starches are an interesting resource for the production of biodegradable lms with good mechanical properties (Valadares et al 2020). Although the hydrophilic nature of starch-based lms makes them poor water barriers (Thakur et al 2019), this disadvantage can be minimized through the incorporation of hydrophobic compounds, such as oils, fats, fatty acids, and waxes (e.g., carnauba wax) (Rodrigues et al…”

Arrowroot Starch-Based Films Incorporated With a Carnauba Wax Nanoemulsion, Cellulose Nanocrystals, and Essential Oils: a New Functional Material for Food Packaging Applications

“…The same observation has been reported for starch lms incorporated with Syzygium aromaticum EO The incorporation of the various concentrations of CEO or MEO did not alter the WVP of the lms. This was similar to the results reported for whey protein lms incorporated with oregano EO (Zinoviadou et al 2009) and AA-based lms incorporated with Piper aduncum EO (Valadares et al 2020).…”

Biodegradable films of arrowroot starch (Maranta arundinacea) incorporated with floral extract of Tabebuia impetiginosa and copper sulfate: physical and physicochemical properties, and biodegradability and antibacterial activities

“…The moisture was determined by loss of packaging mass after had been dried in na oven at 105 °C. The assays were carried out in triplicate as described by Valadares et al (2020).…”

“…Packaging is widely used in the modern world, as a form of protection during transport, storage of solid, liquid and pasty products mainly for the food industries, which requires the maintenance and preservation of the quality and integrity of the final product. The first packaging prototype were produced from the processing of oil, with its synthetic polymer matrix, which is highly efficient in a variety of uses, from product coating to electronic components Kamdem, 2015;Valadares et al, 2020).…”