High quality products can be produced only from high quality raw materials. The best agricultural practices that lead to pineapple fruits of desirable quality were investigated in the present study, focusing on the quality of the derived pasteurized juices. Physicochemical characteristics and sensory quality of the juices were determined in relation to planting density and fertilizer formulation, namely the K₂O:N ratio. Three planting densities (D1: 54 400 plants/ha, D2: 66 600 plants/ha and D3: 74 000 plants/ha) and three K₂O:N ratios (E1: 0.37, E2: 1.0 and E3: 2.0) were applied in nine treatments. Fruits were harvested and processed into juice following a standardized process. Pasteurization was applied after bottling, at 85 °C for 15 min. Juices’ pH, total soluble solids, color and density were determined. Sensory profiles were established by 14 trained panelists using the Quantitative Descriptive Analysis (QDA) method and their acceptability was evaluated. Results showed that the lower the planting density, the less yellow the pasteurized juice. The K₂O:N ratio increased the juices’ degrees Brix from 13.1 to 14.4 and the yellow color. Pineapple fruits produced at a density of 54 400 plants/ha with a K₂O:N ratio of 1.0 (D1E2) yielded the most sweet, least acid and pasteurized juice most liked by consumers, supported by high values of degree Brix and pH. Juices with the closest similar sensory appreciation were those obtained from treatments D3E2 and D3E1. Pineapple farmers that furnish their products to juice processors should adopt one of the best combinations stated in this study.

高品质的产品只能使用高品质的原材料生产。在本研究中，研究了导致菠萝果实品质理想的最佳农业实践，重点是巴氏杀菌果汁的品质。确定果汁的理化特性和感官品质与种植密度和肥料配方有关，即K ₂ O：N比。三种种植密度（D1：54 400株/公顷，D2：66 600株/公顷和D3：74 000株/公顷）和三株K ₂在9个处理中应用O：N比（E1：0.37，E2：1.0和E3：2.0）。采摘水果并按照标准流程将其加工成果汁。装瓶后在85°C下进行巴氏杀菌15分钟。测定了果汁的pH，总可溶性固形物，颜色和密度。由14名训练有素的小组成员使用定量描述分析（QDA）方法建立了感官特征，并对其接受性进行了评估。结果表明，种植密度越低，巴氏杀菌的汁液越黄。K ₂ O：N比率使果汁的糖度从13.1增加到14.4，呈黄色。用K ₂密度为54400株/公顷的菠萝果实O：N比为1.0（D1E2），得到最高糖度和pH值的支持，是消费者最喜欢的最甜，最酸和巴氏杀菌的果汁。与感官欣赏最接近的果汁是从D3E2和D3E1处理获得的果汁。向果汁加工商提供产品的菠萝农应采用本研究中所述的最佳组合之一。