The best post-storage quality of ?Bhagwa? pomegranate is when at the harvest the Brix are >16

Harvest maturity discrimination was carried out for pomegranate (cv. ?Bhagwa?) in simulated handling conditions for long distant supply chains. Fruit were harvested at 3 different maturities along days after full bloom (DAFB):Harvest 1 (H1) at 157 DAFB, H2 at 167 DAFB, and H3 at 175 DAFB. The effects of harvest maturity and storage duration on fruit quality during a 6-wk period of cold storage (5?C, 95% RH) and subsequent 5 d of shelf life (20?C, 75% RH) were investigated. Instrumental evaluation of aril colour, juice content, juice absorbance (520 nm), total soluble solids (TSS), pH, titratable acids (TA), and phytochemical components including total phenolics, flavonoids, and anthocyanins were carried out. Textural properties of arils which included hardness, toughness, bioyield point, and Young?s modulus were also investigated. During the shelf life period, arils from individual fruit were rated by a trained sensory panel based on appearance, taste, and texture. Relationships between the instrumental and descriptive sensory data were explored and fruit harvest maturities were discriminated using discriminant analysis. Among the attributes evaluated, TSS, juice content, aril hardness and anthocyanin content were the most decisive attributes distinguishing the harvest maturities. The results showed that to ensure the best post-storage quality of ?Bhagwa?, the optimum harvest maturity was between 167 - 175 DAFB (H2 and H3) when fruit had reached maximum TSS level (> 16?Brix; H3) and juice content (> 65 mL/100 g aril; H2). In addition, discriminant analysis (DA) showed the possibility of combining these decisive harvest parameters with aril colour intensity to form a potential co-index suitable for distinguishing fruit harvest maturity. The harvest index proposed in this study could be used as a guide to establish a reliable harvest maturity index to assist in assuring fruit quality in consideration of long supply chains for the investigated cultivars.SourcesDISCRIMINATION OF POMEGRANATE FRUIT AT DIFFERENT HARVEST DATES BY INSTRUMENTAL AND SENSORY MEASUREMENTS IN CONSIDERATION OF LONG SUPPLY CHAINSFawole, OA1, Chen, L2, Opara, UL1olaniyi@sun.ac.za1Postharvest Technology Research Laboratory, Faculty of AgriSciences, Stellenbosch University, Stellenbosc, South Africa2School of Medical Instrument and Food Engineering, University of Shanghai for Science and Technology, Shanghai, ChinaIHC 2014, International Horticulture Congress, 17-22 August 2014, Brisbane, http://www.ihc2014.org/Picture by campodeelche.com, a Mollar pomegranate, characterized for its super flavourKey wordsGranada?? ??? ?pomegranate?? ?granaat?? ????????? ????? ??? ?grenade?? ??????? ??????? ??? ?melagrana?? ??? ?rom㠠 ????????? ?nar?? ??????? ? Poscosecha?? ?postcosecha?? ?postharvest?? ?na-oes?? ??? ??? ???????? ????? ??? ?post-r?colte?? ????? ?? ??????????? ??? ?na-oogst?? ?post-raccolta?? ?Obr?bka po?? ?p?s-colheita?? ????????????????? ?hasat sonras??? ??? ?Ernte?? ????????????????? ????? ????????????? ?postcollita?? ?poskliz?ov頠 ????? ??? ??? ??? ?nakon branja?? ?pozberov頠 ??? ?obdelovanje zemlje po?? ?post-colleita?? ?????? ??????? ?pascapanen?? ??il?onn postharvest?? ??????? ?p?c ra?as?? ?derliaus apdirbimas po?? ?lepas tuai?? ??? ?? ???????? ?post-recoltare?? ??????? ??????? ???????????????????? ?????????????? ?????????????????? ?sau thu ho?ch?? ?????????????????? ?zangemva kwenkathi yokuvuna?? ????