The Researcher's Space

Some of our Works

Natural colorants from vegetable food waste: Recovery, regulatory aspects, and stability—A review

Worldwide, approaches inspired by the Circular Economy model have been increasing steadily, generating new business opportunities such as the recovery of high-added value molecules (e.g., pigments) from vegetable food waste that may be applied as food additives (e.g., colorants). Indeed, food waste is a global problem that does not seem to be decreasing, leading to economic, environmental, and...

Betalain Extracts from Beetroot as Food Colorants: Effect of Temperature and UV-Light on Storability

Beetroot is a good source of natural food colorants given that it contains significant amount of betalain pigments. This study investigates the three-months storage stability of betalain extracts recovered from unsold beetroot by...

A Novel Process for the Recovery of Betalains from Unsold Red Beets by Low-Temperature Enzyme-Assisted Extraction

Food waste management plays a central role in the circular economy. To our knowledge, only a few studies have investigated the use of unsold fruit and vegetables from supermarkets as a substitute source for the extraction of natural colorants. Thus, the aim of this paper was to suggest a green, tailored protocol that avoids the use of organic solvents for the recovery of...

Tailored and synergistic enzyme-assisted extraction of carotenoid-containing chromoplasts from tomatoes

Despite significant efforts recently made to improve the recovery yield of food pigments from natural sources, the development of green and sustainable biotechnological approaches is currently under investigation. Within the context of circular economy, food wastes represent a cheap source for the recovery of...

Multi-enzymatic Systems Immobilized on Chitosan Beads for Pomegranate Juice Treatment in Fluidized Bed Reactor: Effect on Haze-Active Molecules and Chromatic Properties

In this study, two different food-grade enzymes (i.e., bromelain from a pineapple stem (protease) and Pectinex® BE XXL (pectinase)) were successfully immobilized on chitosan beads and their application in pomegranate juice clarification was evaluated. The immobilization procedure was...

Novel food colorants from tomatoes: Stability of carotenoid-containing chromoplasts under different storage conditions

Despite years of research, the application of natural pigments as food ingredients is still limited by their low stability. This research investigated the storability of carotenoid-containing chromoplasts, as novel natural food colorant from unsold tomatoes. The 30-day stability of chromoplasts (Chr), in comparison to...

Prolyl endopeptidase from Aspergillus niger immobilized on a food-grade carrier for the production of gluten-reduced beer

The recently growing demand of gluten-reduced beer is leading to the development of diverse approaches to be applied in brewing. The current work focuses on the development of an innovative and sustainable biocatalytic tool for the continuous production of...