Wan Zaliha W.S
Universiti Malaysia Terengganu

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THE EFFECTS OF CHARCOAL FROM DIFFERENT AGRICULTURAL WASTES IN REDUCING ETHYLENE PRODUCTION OF BERANGAN BANANA (Musa sp. AAA Berangan) Nor Afifah A.R.; Siti Amirah M.Z.; Husni Hayati M.R.; Wan Zaliha W.S
UNEJ e-Proceeding Proceeding of International Conference on Food Sovereignty and Sustainable Agriculture (FoSSA) 2017
Publisher : UPT Penerbitan Universitas Jember

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Abstract

Banana is a climacteric fruit, it produces enough ethylene bringing about speedy changes inphysico-chemical characteristics, including colour, texture, aroma, chemical composition,respiration rate and senescence. Ethylene, a colourless gas, is the main regulator of ripeningin climacteric fruits which leads to the short marketable life and increase postharvest losses.These losses can be reduced by adopting various postharvest management practices that arecurrently in practice all over the world. One of the most effective ethylene removals ispotassium permanganate. However, the usage of non-commercial charcoal from agriculturalwastes that capable to remove or absorb ethylene such as palm kernel shell (PKS), sugarcanebagasse (SB) and coconut shell (CS) is scarce. The treatments were i) control (withoutethylene absorbent), ii) 25g PKS, iii) 25g CS, and iv) 50g SB charcoal with 3 replications. Thepostharvest parameters assessment were internal ethylene production, fruit colour indices,firmness, titratable acidity (TA), soluble solids concentration (SSC), weight loss and starchpattern index (SPI). Internal ethylene production was assessed on daily basis. Meanwhile,other quality parameters were assessed on every four days interval. PKS had the ability todelay the climacteric peak of the ethylene production and prolong the shelf life of Beranganbanana, without significant reduction in its postharvest quality. In addition, PKS charcoalwere light, easy to obtain and cheaper ethylene adsorbent. In contrast, SB charcoal was lesseffective in delaying the ripening of Berangan banana. The shelf life of Berangan banana canbe extended up to 6 days with no apparent changes in colour and weight loss.
EFFECTS OF DIFFERENT VOLUMES OF NITROGEN GAS FUMIGATION ON POSTHARVEST PERFORMANCES MINIMALLY PROCESSED PINEAPPLE (Ananas Comosus L.) Mubarak A.; Tan G.I.; Wan Zaliha W.S
UNEJ e-Proceeding Proceeding of International Conference on Food Sovereignty and Sustainable Agriculture (FoSSA) 2017
Publisher : UPT Penerbitan Universitas Jember

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Abstract

Fresh cut pineapple has a high popularity nowadays because of its fresh like quality, readyto-eatpropertiesandhighnutritionalvalue.However,priortopeelingandcuttingprocesses, fresh cut pineapple is usually susceptible to browning incidence, which was catalysed bypolyphenol oxidase (PPO) enzyme. Browning incidence generally degraded the overallattributes of fresh cut pineapple, and simultaneously, limited its shelf life. In present study,the effects of different volumes of nitrogen (N2) gas (0 mL, 5 mL, 10 mL, 15 mL, 20 mL and 25mL) on fresh cut pineapples were evaluated under 5 ºC storage for nine days. The parametersbeing evaluated were browning incidence, flesh colour, total phenolic content, ascorbic acidconcentration, flesh firmness, soluble solids concentration and titratable acidity. It is shownthat N2 gas fumigation at higher volume had significant effect (p≤0.05) in reducing browningincidence of fresh cut pineapple. However, no apparent effects were found in otherpostharvest parameters. In conclusion, fumigation with 25 mL of N2 gas has a tendency indelaying the occurrence of browning, and maintaining other quality attributes of fresh cutpineapple.