Carrot cellulose nano fibers (CNF) have been extracted from carrot pulp using acid hydrolysis process. The size of the CNF was in the range of 6.33–58.77 nm. Starch nano-composite films were manufactured using varying concentration of CNF (5%, 10%, 15%, 20%) and mechanical properties of the films were studied at relative humidity 50% and 75%. Nano-composite films were manufactured using Eucalyptus globulus leafs extract (1%, 2%, 3%, 4%). Physio-chemical properties, antioxidant, antimicrobial, morphological and crystalline properties of the films were studied. Nano-composite films with 4% Eucalyptus globulus leafs extract was best to provide better barrier, antioxidant properties to grapes when wrapped and stored at room temperature (25 ± 2)°C for 7 days and refrigerator temperature (4 ± 1)°C for 28 days. Wrapped grapes with NCC/Eucalyptus globulus leaf extract stored for 28 days either at 25 °C or 4 °C had bacterial surface loads reduced up to 5 orders of magnitude compared to non-wrapped samples and had 4 orders of magnitude less bacterial surface loads than at the beginning of the experiments. Wrapped grapes with NCC/Eucalyptus globulus leaf extract significantly reduced the growth of Escherichia coli, Listeria monocytogenes, Salmonella typhimurium and Penicillium spp. when the cells of these organisms were spiked onto grapes and the samples were stored either at (25 ± 2) °C or (4 ± 1) °C for 28 days.

The results showed that nano-composite with 4% Eucalyptus globulus leafs extract films have immense potential as food packaging/wrapping material.

胡萝卜纤维素纳米纤维（CNF）已通过酸水解工艺从胡萝卜浆中提取出来。CNF的大小在6.33–58.77 nm的范围内。使用不同浓度的CNF（5％，10％，15％，20％）制造淀粉纳米复合薄膜，并在相对湿度50％和75％的条件下研究了薄膜的机械性能。纳米复合膜是使用桉叶提取物（1％，2％，3％，4％）制成的。研究了薄膜的理化性能，抗氧化剂，抗菌性能，形态和结晶性能。纳米复合膜，含4％的桉树球树叶提取物最好包装后在室温（25±2）°C和冷藏温度（4±1）°C下保存28天，为葡萄提供更好的阻隔和抗氧化性能。在25°C或4°C下保存了28天的NCC /桉树叶提取物包裹的葡萄与未包裹的样品相比，细菌的表面负荷降低了5个数量级，而细菌的表面负荷比未包裹的样品减少了4个数量级在实验开始时。用NCC /球墨桉叶提取物包裹的葡萄可显着降低大肠杆菌，单核细胞增生李斯特菌，鼠伤寒沙门氏菌和青霉菌的生长spp。将这些生物的细胞掺入葡萄中，然后将样品在（25±2）°C或（4±1）°C下保存28天。

结果表明，含4％桉树叶提取物薄膜的纳米复合材料作为食品包装材料具有巨大的潜力。