Biomolecular characterization, identification, enzyme activities of molds and physiological changes in sweet potatoes (Ipomea batatas) stored under controlled atmospheric conditions

Oladoye, C.O.; Connerton, Ian F.; Kayode, R. M. O.; Omojasola, P. F.; Kayode, I. B.

doi:10.1631/jzus.b1400328

Cited by 9 publications

(5 citation statements)

References 35 publications

(41 reference statements)

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“…The leaves stored under 7 ºC after treating with -0.1% Sodium benzoate and 0.1% ascorbic acid resulted minimum physiological loss in weight (5.67%) while the maximum physiological weight loss was observed in control leaves (9.67%). In general, the bacterial, yeast and molds growth causes the degradation of the stored plant tissues and as a result there will be a loss in the physiological weight (Oladoye et al, 2016) [8] . With the use of Sodium benzoate the activity of the said organisms was reduced and inhibits the physiological weight loss.…”

Section: Physico-chemical Parametersmentioning

confidence: 99%

Effect of chemical treatments on shelf life and quality of Aloe vera L. leaves

Uppar,

Ashok,

Patel

et al. 2024

Int. J. Adv. Biochem. Res.

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Aloe vera gel, a commercial product obtained from the leaves of Aloe barbadensis, belongs to the plant family Liliaceae. The mesophyll of the leaves is the major constitute of the gel and this has to be stored at proper conditions to get the commercial value. During storage the syneresis of the gel and activity of the microbial organisms deteriorates the shelf life of the gel and hence an attempt made to increase the storage life of the gel with the use of chemicals under 7 o C. In the study it revealed that treatment of the leaves with 2% Calcium chloride performed best in specific gravity, gel recovery percentage and ascorbic acid content in the gel and the same treatment gave best results in sensory parameters like colour, texture and overall acceptability according to 9 point hedonic scale.

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Section: Physico-chemical Parametersmentioning

confidence: 99%

Effect of chemical treatments on shelf life and quality of Aloe vera L. leaves

Uppar,

Ashok,

Patel

et al. 2024

Int. J. Adv. Biochem. Res.

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“…Kondisi ini termasuk dalam gejala penyakit java black rot yang disebabkan oleh kapang Botryodiplodia theobromae yang memiliki masa pertumbuhan 3-5 minggu. Suhu optimum pertumbuhan kapang ini adalah 25- Keberadaan kapang pada umbi juga mampu mereduksi nilai nutrisi dan nilai jualnya serta mengakibatkan produksi mikotoksin yang merupakan metabolit sekunder dan diproduksi oleh kapang, yang bersifat toksik sehingga bisa menimbulkan kematian bagi yang mengkonsumsinya 8,21,22,23,24 . Hal tersebut disebabkan aktivitas enzim yang dihasilkan oleh kapang yang mampu merusak jaringan dinding sel seperti amilosa dan selulosa yang terjadi dalam waktu kurang dari 4 minggu 8,16,25,26 .…”

Section: Gejala Penyakitunclassified

PERUBAHAN KADAR AIR DAN PATI UBI JALAR (Ipomea batatas L.) SEGAR PADA SISTEM PENYIMPANAN SEDERHANA

Kafiya¹,

Sutrisno²,

Syarief³

2018

Jurnal Pasca

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Penyimpanan ubi jalar di daerah infrastruktur terbatas yang mengutamakan kesederhanaan teknologi dan kemurahan biaya diupayakan dengan menggunakan bahan-bahan lokal yang tersedia seperti pasir, jerami dan serbuk gergaji. Selama penyimpanan, kandungan nutrisi di dalam ubi jalar berpotensi mengalami perubahan, khususnya kandungan air dan pati sehingga memengaruhi mutu ubi jalar. Umur simpan ubi jalar ditandai dengan pembusukan, berupa penurunan mutu dan tanda-tanda penyakit yang disebabkan oleh mikroorganisme. Penelitian ini bertujuan melakukan identifikasi dan analisis teknologi terbaik dengan memperhatikan perubahan kadar air dan pati serta penyakit yang menjadi penentu perubahan mutu ubi jalar. Rancangan percobaan yang digunakan adalah rancangan acak lengkap dengan 4 taraf perlakuan penyimpanan yaitu di dalam tanah dengan alas tumpukan pasir-jerami (P1), di dalam tanah dengan alas tumpukan plastik-jerami (P2), di dalam kotak kayu dengan taburan serbuk gergaji (P3) dan di ruang gudang dengan alas terpal (P4). Hasil penelitian menunjukkan bahwa metode penyimpanan memberikan pengaruh terhadap suhu dan RH ruang penyimpanan dengan nilai masing-masing adalah 28,72 oC dan 78.55% (P1), 28,85 oC dan 78,51% (P2), 29,54 oC dan 73,15% (P3), serta 29,61 oC dan 68.07% (P4). Kadar air dan pati mengalami penurunan selama penyimpanan pada semua perlakuan hingga akhir penyimpanan dengan kadar terendah pada perlakuan P4 yang masing-masing sebesar 58,96 dan 11,35%. Sedangkan penyakit yang dapat diidentifikasi pada penelitian ini adalah busuk Fusarium pada penyimpanan P4 dan penyakit java black rot pada penyimpanan P2. Berdasarkan metode pendugaan umur simpan, maka penyimpanan di dalam tanah dengan alas tumpukan pasir-jerami (P1) merupakan metode terbaik dengan umur simpan diduga mencapai 35 hari.English Version AbstractExtra Quality Sweet Potato (Ipomea batatas L) Fresh on the System Rural Scale StorageSweet potato storage in areas with limited infrastructure which focuses on a simple and low-cost technology is conducted by using local materials, such as sand, straw, and sawdust. During the storage period, sweetpotato’s nutrition content will potentially deteriorate, particularly in moisture and starch content. This will eventually affect the quality of sweetpotato. The shelf life of sweetpotato is marked by the spoilage in the form of quality deterioration and some noticeable signs of diseases, most of which are induced by microorganism. This study aimed to study the best technology to evaluate quality change, diseases and shelf life of sweetpotato. The experimental design used was completely randomized design of 4 factors by using various storage ways, i.e. underground storage with sand-straw (P1), underground storage with plastic-straw (P2), inside a wooden box with sprinkling of sawdust (P3), and inside a warehouse with a tarpoulin mat (P4). The results showed that the storage treatments influenced the temperature and RH in a storage room with the values as follows: 8.72 ° C and 78.55% (P1), 28.85 C and 78.51% (P2), 29.54 and 73.15 ° C % (P3), and 29.61 ° C and 68.07% (P4). Moisture and starch contents in sweet potato significantly decreased until the end of storage in which the lowest levels were found in P4 treatment, 58.96 % water content and 11.35 % starch. Postharvest diseases found in sweet potato during research were Fusarium rot (P4) and java black rot (P2). In conclusion, underground storage with sand-straw (P1) was selected as the best method to minimize rate of decreasing moisture and starch contents in sweetpotato with the longest storage period estimated of 35 days.

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“…Environmental stress, such as temperature, can affect the reaction rate and the resulting intermediate compounds, such as chlorophyll, vitamins, and flavonoids. Secondary metabolites are formed in response to environmental stress (Oladoye et al, 2016).…”

Section: Introductionmentioning

confidence: 99%

Shelf Life and Secondary Metabolite Content of Sweet Potato (Ipomoea batatas L.) Lam. Coated with Chitosan Coating at Low Temperature Storage

Mudyantini

Suranto²,

Solichatun³

et al. 2023

agriTECH

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Sweet potato (Ipomoea batatas (L.) Lam.) has diverse varieties with different secondary metabolite content. Postharvest treatment with low-temperature storage and chitosan coating is expected to expand the shelf life of sweet potatoes. The combination of these treatments will affect the secondary metabolite content of diverse sweet potato varieties. Therefore, this study aims to observe the secondary metabolite content and shelf life extension of 3 sweet potato varieties after coating with chitosan and low-temperature storage. A completely randomized design (CRD) was used with a three-factors experiment. The first factor was chitosan concentration at 0, 10, 15, and 20 g/L, the second was storage room temperature at 25, 15, and 5 °C, while the third was the color of sweet potato varieties namely white, purple, and orange from Tembakur and Mendut varieties. Meanwhile, the control group was tubers without chitosan coating at a storage temperature of 25 °C. Each treatment had five replications and the parameters assessed were changes in wet weight, hardness, respiration, the total chlorophyll level, carotenoid, vitamin C, reducing sugar, and the level of flavonoid. Data were analyzed with Analysis of Variance and then continued with Duncan's Multiple Range Test at a significance level of 5%. The result showed that low-temperature storage combined with chitosan coating affected the shelf life of sweet potatoes. Overall, the best storage temperature was 15 °C, indicated by the highest residual secondary metabolite and the most extended shelf life. The 5°C treatment decreased oxygen consumption during storage, as indicated by a low respiration rate. However, this storage temperature caused a chilling injury and culminated in the shorter shelf life of all examined sweet potatoes. The best coating was achieved by chitosan 15 g/L, indicated by the capability to coat sweet potato surface and maintain the high content of all targeted chemical components. The results also revealed that 20 g/L chitosan concentration is not practical for coating due to its in elasticity and the potential to create a crack in the coating layer.

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Biomolecular characterization, identification, enzyme activities of molds and physiological changes in sweet potatoes (Ipomea batatas) stored under controlled atmospheric conditions

Cited by 9 publications

References 35 publications

Effect of chemical treatments on shelf life and quality of Aloe vera L. leaves

Effect of chemical treatments on shelf life and quality of Aloe vera L. leaves

PERUBAHAN KADAR AIR DAN PATI UBI JALAR (Ipomea batatas L.) SEGAR PADA SISTEM PENYIMPANAN SEDERHANA

Shelf Life and Secondary Metabolite Content of Sweet Potato (Ipomoea batatas L.) Lam. Coated with Chitosan Coating at Low Temperature Storage

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