Extraction of starch from Hass avocado seeds for the preparation of biofilms

Abstract

Biofilms arise as an alternative to replace synthetic polymers, which have generated environmental pollution. The aim of this work was to extract starch from Hass avocado seeds (Persea americana Mill) to produce biofilms. Starch was extracted using the wet method and characterized by infrared spectroscopy. Moisture, ash content, gelatinization temperature, and color were determined. Two types of biofilms were produced: T1 (starch) and T2 (starch and glycerol). The colour was measured, and the films were characterized by mechanical tests. A yield of 11.38% was obtained for the isolated starch. Glycerol addition significantly influenced the tensile strength being T1 higher than T2. In elongation percentage, T1 was lower than T2. The results indicate that it is possible to use Hass avocado seed waste for starch extraction and produce biofilms to give it added value. This biofilm can be used in low moisture food coatings.

Extraction and Characterisation of Avocado Seed Starch, and Its Blend with Enset Cellulosic

“…Moisture content is very important for all types of raw materials and other finished products in order to know the amount of water and other volatile components that will be absorbed. e moisture content of the avocado seed obtained was determined to be 12.7 ± 0.03%, which is slightly higher than the values already reported [21] but in compliance with a range of 10-14% in another reported article [22]. e starch, with a moisture content of 12.7% at room temperature, is not vulnerable to deterioration by bacteria or fungi.…”

Waste Matter of Cactus Cladodes (Opuntia spp.) Produced in Mexico for Innovation and Sustainable Development

“…The CONACyT information agency in one of its numbers reports that researcher Carlos Constantino, a researcher from the Universidad Autónoma de Hidalgo, managed to obtain two fractions: a solid and a liquid, pectin and mucilage, identifying various applications as a food additive in everyday products 25 . In addition, there are some patents in which they use cladode as the main material 26 , MX2014014416A where it is used as an additive for a clay brick 27 , MX2015000599A in this the nopal mucilage is spray dried and used as a thickener and powder egg coating 28 , MX2010001168A which refers to the use of cladode pectin as sparkling wines 29 .…”

Influence of the phytochemical profile on the peel, seed and pulp of margarida, breda and geada varieties of avocado (Persea Americana Mill) associated with their antioxidant potential

“…These avocado seed residues are the main source of starch, antioxidants, natural dyes and phenolic compounds, and can be used for various applications in pharmaceutical and biomedical industries (Tesfaye et al, 2022). In addition, avocado seed residues can be used to produce biofilms from starch in order to add value and be used in lowmoisture food coatings (Jiménez et al, 2022).…”