Development of rapid and non-destructive technique for the determination of maturity indices of pomelo fruit ( Citrus gr
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ORIGINAL PAPER
Development of rapid and non‑destructive technique for the determination of maturity indices of pomelo fruit (Citrus grandis) Arun Kumar Gupta1 · Manisha Medhi1 · Sourav Chakraborty1 · Monica Yumnam1 · Poonam Mishra1 Received: 20 April 2020 / Accepted: 2 November 2020 © Springer Science+Business Media, LLC, part of Springer Nature 2020
Abstract Quality of fruit and the subsequent eating attribute is closely linked factors that have a significant effect on marketability and have always been correlated with harvest maturity. In the present investigation, the main focus was given on the development of an inexpensive and rapid tool for identification of appropriate plucking time in the field through colour chart and ANN modeling. The effect of maturity on growth attributes, biochemical properties, and quality attributes of pomelo fruit was thoroughly investigated. A systematic change in the growth attributes, colour properties, and biochemical properties of juice was observed with maturity. Quality attributes such as BrimA and internal quality index have presented inconsistent trends over maturity. In contrast, a regular, systematic change was observed in the ripening index, chlorophyll, and β-carotene content with maturity. A colour chart mentioning various ripening stages was created based on color properties, which were successfully used for the maturity classification. Besides, a correlation between colour parameters (L*, a*, b*), and quality attributes was successfully established using ANN, where 3-5-5 was found the best architecture. Graphic abstract
Keywords Pomelo · Maturity · Naringin · Quality attributes · Colour chart · ANN Electronic supplementary material The online version of this article (https://doi.org/10.1007/s11694-020-00734-4) contains supplementary material, which is available to authorized users. * Poonam Mishra [email protected]; [email protected] Extended author information available on the last page of the article
Highlights 1. Ripening index may be a suitable maturity index for pomelo fruit due to its systematic trend over maturity.
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2. The colour chart developed based on peel colour can be effectively used for the classification of different maturity stages of pomelo fruit. 3. ANN model is effectively used for the prediction of optimum maturity and quality attributes of pomelo fruit.
Introduction Rutaceae is a large botanical family in which the dominant members are sweet orange (Citrus sinensis), mandarin or tangerine orange (Citrus reticulata), grapefruit (Citrus paradisi), lemon (Citrus limon), lime (Citrus aurantifolia), and pomelo (Citrus grandis) [1]. Pomelo fruit having a unique shape, flavor, colour, and g all quality attributes that are attractive to consumers and is believed to be an ancestor of grapefruit [2]. Southeast Asia and Indo-China regions believed to be native regions of this most abundant citrus fruit [2]. Pomelo being an acidic and bitter nature, is mostly used for flavouring vegetable dishes, fish, meat, sal
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