scholarly journals Odor-Active Constituents in Fresh Pineapple (Ananas comosus[L.] Merr.) by Quantitative and Sensory Evaluation

2005 ◽  
Vol 69 (7) ◽  
pp. 1323-1330 ◽  
Author(s):  
Yukiko TOKITOMO ◽  
Martin STEINHAUS ◽  
Andrea BÜTTNER ◽  
Peter SCHIEBERLE
2020 ◽  
Vol 8 ◽  
pp. 29-37
Author(s):  
B.A.M.S. Kumara ◽  
Kasun D.T. Hettige

Pineapple (Ananas comosus (L.) Merr.) being a non climacteric fruit, its flavor and sugar content does not increase after harvesting. Thus, the maturity stage at harvesting affects the quality of pineapples after harvesting. This study was conducted to compare the quality parameters at four different ripening stages of pineapple (cultivar Mauritius-Queen type) and their effect on sensory properties after dehydration. Pineapples were harvested at dark green, 50% yellow, 75% yellow and 100% yellow color stages. Total Soluble Solid (TSS) content, Titratable Acidity (TA), TSS/TA ratio, pH, Fruit firmness, L*,a*,b* and hue angle were quantified in fresh samples and the appearance, texture, taste, odor, color and overall acceptability were evaluated in dehydrated samples at each ripening stage. The ripening stage had a significant (P<0.05) effect on selected quality parameters of fresh pineapples. Highest TSS content of 17.75±0.67 was observed in 100% yellow stage whereas the lowest was observed in dark green stage (15.75±0.48). In contrast, the highest firmness was observed in dark green stage (27.47±6.4 N) while the lowest was in 100% yellow stage (12.01±1.17 N). Lowest pH and highest TA were observed in dark green stage while the highest pH and lowest TA were observed in 100% yellow stage with values of 3.49±0.06, 0.82±0.02, 3.74±0.01 and 0.78±0.02, respectively. Sensory evaluation revealed that 75% yellow stage is the optimum ripening stage for dehydration of pineapple (cultivar Mauritius-Queen type) with significantly greater sensory evaluation ranks compared to other stages.


Author(s):  
Enrika Joy Ajit ◽  
Dilna Dominic ◽  
Faseela Farook ◽  
Athira Promod ◽  
Bhagya MS Kumar ◽  
...  

2020 ◽  
pp. 1-8
Author(s):  
Adelakun, Oluyemisi Elizabeth ◽  
Taiwo, Omotayo Tijesuni

Pineapple, one of the most popular tropical fruits is largely desired for its attractive flavor and can be processed into juice. Fruit juice blends can be produced from various fruits or food materials such as tigernut an underutilized tuber, in order to give better quality drink nutritionally and organoleptically. This work therefore evaluated some quality attributes of the beverage produced from tigernut and pineapple. Tigernut and Pineapple fruit were purchased from local market at Ogbomoso. Single strength juice was produced from pineapple fruit while the tigernut milky extract was produced. The pineapple juice was blended with tigernut milky extract in different proportions (95:5, 90:10, 85:15, 80:20 and 75:25%) while 100% pineapple juice served as the control and were analyzed for physiochemical composition and sensory evaluation (Colour, flavor, taste and overall acceptability). The data obtained were subjected to statistical analysis. The results showed that the physiochemical properties of juice compared relatively well with the control and sensory evaluation showed that all the juice samples were well acceptable in terms of colour, flavour, taste and overall acceptability. The juice blend could be recommended to every household for its nutritional and therapeutic properties.


2018 ◽  
Vol 13 (3) ◽  
pp. 115
Author(s):  
Riyanti Ekafitri ◽  
Rima Kumalasari ◽  
Dewi Desnilasari

<p>Jenis dan konsentrasi hidrokoloid akan menentukan kualitas dari minuman jeli baik sifat fisikokimia dan penerimaan sensorinya. Tujuan penelitian ini adalah untuk mengkaji pengaruh jenis dan konsentrasi hidrokoloid terhadap mutu fisikokimia dan penerimaan minuman jeli berbahan baku sari buah campuran pepaya (<em>Carica papaya</em>) dan nanas (<em>Ananas comosus</em>). Penelitian ini disusun menggunakan Rancangan Acak Lengkap Faktorial dengan 2 faktor, yaitu faktor jenis hidrokoloid, terdiri dari 2 taraf (karagenan dan karagenankonjak) dan faktor konsentrasi hidrokoloid, terdiri dari 3 taraf (0,5%,0,7%, 0,9%, dan 1,1%). Analisis yang dilakukan adalah analisis pH, total asam tertitrasi (TAT), total padatan terlarut (TPT), dan uji organoleptik. Produk terbaik diuji dan dibandingkan teksturnya dengan produk komersial. Produk terbaik diuji proksimat, kandungan serat pangan dan warna. Hasil penelitian menunjukkan jenis dan konsentrasi hidrokoloid berpengaruh terhadap pH, tetapi tidak berpengaruh terhadap TPT dan TAT minuman jeli. Tingkat kesukaan panelis berdasarkan uji organoleptik pada paramater warna, aroma, rasa, daya sedot, dan penerimaan keseluruhan terhadap minuman jeli dipengaruhi oleh konsentrasi hidrokoloid tetapi tidak dipengaruhi oleh jenis hidrokoloid. Produk terbaik yang mendekati produk komersial adalah minuman jeli pepaya nanas dengan penambahan hidrokoloid karagenan 1,1% dengan sifat fisik : kekerasan 62,5 gf dan kekuatan gel 7,33 Mj, mengandung kadar air 84,02%, abu 0,17%, lemak 0,39%, protein 0,26%, serat pangan sebesar 6,39%, vitamin C sebesar 19,99 mg/ 100g dan warna dengan nilai L 28,64; a 4,73 ; dan b 9,52.</p><p align="center"><strong>English Version Abstract</strong></p><p align="center"><strong><strong>(Effect of Type and Concentration of Hidrocolloid on the Quality of Jelly Drink from Papaya-Pineapple Mixed Juice.)</strong></strong></p><p>The type and concentration of hydrocolloids will determine the quality of jelly products both physicochemical and sensory evaluation. Beside has a high gel strength and low syneresis, carrageenan and konjac (konjac glucomannan) also contain high dietary fiber. The purpose of this study was to find out the effect of the type and concentration of hydrocolloid on the physicochemical and sensory evaluation of the jelly drink made from a papaya pineapple mixed juice. This study uses a factorial completely randomized design (CRD) to evaluate the effect of two kinds of hydrocolloids (carrageenan and mixture of carrageenan konjac) and four concentrations of hydrocolloid (0.5; 0.7; 0.9; 1.1%), in manufacture of jelly drink. An analysis of eight treatments i.e., pH, total acid, total dissolved solids, and organoleptic test. Samples will be selected into two products using DeGarmo effectiveness index, which its texture will be tested and compared to commercial products. The best products analyzed proximate value, the content of dietary fiber and color. Results showed that the type and concentration of hydrocolloids influenced the levels of pH jelly drink, but did not affect on dissolved solids and total acid. Hydrocolloid concentration also affects the assessment of the panelists of the jelly drink products. The best product is papaya pineapple jelly drink with the addition of 1.1% carrageenan hydrocolloid with physical properties: hardness 62.5 gf and gel strength 7,33 Mj, containing moisture 84.02%, ash 0.17%, fat 0.39 %, 0.26% protein, dietary fiber 6.39%, vitamin C 19.99 mg/100 g and color properties : value of L 28.64; a 4.73; and b 9.52.</p>


2017 ◽  
Author(s):  
F Monji ◽  
PG Adaikan ◽  
C Lau Lang ◽  
AM Siddiquee Abrar ◽  
B Said Baharudin ◽  
...  

Author(s):  
M. Díaz-Ramírez
Keyword(s):  

Objetivo: Elaborar películas comestibles con la pectina extraída de la cáscara de piña, (Ananas comosus L.) y evaluar características de color, resistencia a la perforación y degradabilidad. Diseño/metodología/aproximación: Las películas comestibles se elaboraron utilizando el método de vaciado en placa (7ml y 10ml). Resultados: Las películas de pectina de cáscara de piña tuvieron valores de luminosidad y resistencia a la perforación menores (entre 42.18 ±0.47 y 31.07 ±0.66; entre 8.87 ±0.82 N y 3.61 ±0.4 N) que las del control (cítricos) (entre 86.0 ±0.26 y 85.46 ±0.99; entre 26.01 ±2.9 N y 18.82 ±1.9 N) pero su degradabilidad (% pérdida de peso) al primer día fue significativamente mayor (P<0.05); al final (7 d) ambos tipos de películas mostraron una degradabilidad similar (99%). Limitaciones del estudio/implicaciones: Se deben mejorar las propiedades físicas y mecánicas de las películas comestibles hechas con pectina extraída de la cáscara de piña. Hallazgos/conclusiones: Este trabajo demostró que las películas a partir de pectina de cáscara de piña son altamente biodegradables y no se descarta su uso y aplicación en alimentos; sin embargo, se requieren más estudios para la optimización de sus características físicas y mecánicas.


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