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      Solar air drying for innovative Opuntia ficus-indica cladode dehydration

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          Abstract

          Providing a case study of general applicability in all world's semi-arid regions where the plant is increasingly harvested, we describe the use and outcomes of solar air heating and ventilation coupled to a conventional kiln to dehydrate Opuntia ficus-indica cladodes. For the first time, the dried cladodes and the ground dehydrated ‘Nopal’ cladodes retain their natural green-yellow color. New applications to functionalize foodstuff and to formulate nutraceutical, personal care and cosmetic products of even higher efficacy and broader scope are anticipated.

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          Most cited references 23

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          Cactus stems (Opuntia spp.): a review on their chemistry, technology, and uses.

          Although traditionally used as a valuable health supporting nutrient, the vegetative parts of Opuntia spp. plants are scarcely used in modern nutrition and medicine. While all kinds of different Opuntia spp. have been studied, a systematic approach regarding the inter-relationships between the composition and the pre- and postharvest conditions is still missing. Therefore, the present review compiles and discusses literature on the chemical composition of cactus stems, the knowledge on uses in food, medicine, and cosmetics. It is concluded that much research is needed to get an insight into the multitude of bioactivities reported in the traditional literature but also to take advantage of the respective constituents for food and pharmaceutical applications.
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            Cladodes from Opuntia ficus indica as a source of dietary fiber: Effect on dough characteristics and cake making

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              Anatomical, chemical, and biochemical characterization of cladodes from prickly pear [Opuntia ficus-indica (L.) Mill.].

              Opuntia ficus-indica cladodes represent the green stem of the plant and are generally used as animal feed or disposed of in landfills. The present work investigated the anatomical and chemical composition of Opuntia cladodes, which form the basis of their pharmacological effects. Glucose and galacturonic acid were the main sugars of Opuntia cladodes, whereas high-performance liquid chromatography (HPLC) analysis showed the presence of mainly kaempherol and isorhamnetin glycosides (glucoside and rhamnoside). The presence of high amounts of calcium oxalate crystals was demonstrated by light microscopy on fresh and lyophilized cladodes. No antimicrobial activity was observed even after enzymatic treatment. O. ficus-indica cladodes may retain material tightly associated with cell-wall components, and this property will have the potential to greatly reduce the bioavailability of bioactive compounds.
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                Author and article information

                Journal
                fopen
                https://www.4open-sciences.org
                4open
                4open
                EDP Sciences
                2557-0250
                11 February 2019
                11 February 2019
                2019
                : 2
                : ( publisher-idID: fopen/2019/01 )
                Affiliations
                [1 ] Istituto per lo Studio dei Materiali Nanostrutturati, CNR, via U. La Malfa 153, , 90146 Palermo, Italy,
                [2 ] Bioinagro, via G. Garibaldi 225 E2, , 92027 Licata, AG, Italy,
                [3 ] via C. Giaquinto 14, , 90135 Palermo, Italy,
                Author notes
                [* ]Corresponding author: mario.pagliaro@ 123456cnr.it
                Article
                fopen180021
                10.1051/fopen/2019001
                © R. Ciriminna et al., Published by EDP Sciences 2019

                This is an Open Access article distributed under the terms of the Creative Commons Attribution License ( http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

                Page count
                Figures: 6, Tables: 0, Equations: 0, References: 33, Pages: 6
                Product
                Self URI (journal page): https://www.4open-sciences.org/
                Categories
                Chemistry - Applied Chemistry
                Rapid Communication
                Custom metadata
                4open 2019, 2, 1
                2019
                2019
                2019

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