High-strength-electric-field pumpable-food-product treatment in a
serial-electrode treatment cell
    11.
    发明授权
    High-strength-electric-field pumpable-food-product treatment in a serial-electrode treatment cell 失效
    串联电极处理电池中的高强度电场可泵送 - 食品处理

    公开(公告)号:US06110423A

    公开(公告)日:2000-08-29

    申请号:US20266

    申请日:1998-02-06

    摘要: A system for deactivating organisms in a food product employs a first electrode; an insulator section coupled to the first electrode, wherein the insulator section includes an insulator pinch, an opening, and a transition region interposed thereinbetween, and wherein the opening has a larger cross-sectional area than the insulator pinch, the insulator section including a cavity, passing through the insulator pinch, the transition region, and the opening, wherein the food product is contained during deactivating of organisms; and a second electrode coupled to the insulator section, wherein the first electrode is positioned on a first side of the insulator pinch, and the second electrode is positioned on a second side of the insulator pinch, whereby an electric field formed between the first electrode and the second electrode, when a voltage is applied across the first electrode and the second electrode, passes through the insulator pinch.

    摘要翻译: 用于使食品中生物体失活的系统采用第一电极; 绝缘体部分,其耦合到所述第一电极,其中所述绝缘体部分包括绝缘体夹紧,开口和介于其间的过渡区域,并且其中所述开口具有比所述绝缘体夹持件更大的横截面面积,所述绝缘体部分包括空腔 穿过绝缘体夹紧,过渡区域和开口,其中在生物体失活期间包含食品; 以及耦合到所述绝缘体部分的第二电极,其中所述第一电极位于所述绝缘体夹持件的第一侧上,并且所述第二电极位于所述绝缘体夹紧的第二侧上,由此形成在所述第一电极和 当跨越第一电极和第二电极施加电压时,第二电极通过绝缘体挤压。

    Prolongation of shelf-life in perishable food products
    13.
    发明授权
    Prolongation of shelf-life in perishable food products 失效
    延长易腐食品的保质期

    公开(公告)号:US5489442A

    公开(公告)日:1996-02-06

    申请号:US228608

    申请日:1994-04-18

    CPC分类号: A23L3/26 A23L3/34

    摘要: A method for prolonging the shelf-life of perishable food products includes applying a fluid coating to a surface of the food product. The fluid coating adheres to the surface and forms a solid coating that covers the surface. The solid coating is preferably an edible coating and is at least partially transparent to light having a frequency within a prescribed frequency range, and the solid coating reduces the accessibility of the surface of the food product to microorganisms. Next, the solid coating is illuminated with light within the prescribed frequency range. At least a portion of the light passes through the solid coating and deactivates microorganisms at and near the surface of the food product thereby increasing the shelf-life of the food product. An apparatus for carrying out the above method has an application device that applies the fluid coating material to the surface; a light source that illuminates the solid coating with light; and a energizing device that energizes the light source.

    摘要翻译: 延长易腐食品的保存期限的方法包括将流体涂层施加到食品的表面。 流体涂层粘附到表面并形成覆盖表面的固体涂层。 固体涂层优选是可食用的涂层,并且对于频率在规定频率范围内的光至少部分透明,并且固体涂层降低了食品表面对微生物的可及性。 接下来,固体涂层用规定频率范围内的光照射。 光的至少一部分通过固体涂层并使食品表面上和附近的微生物失活,从而增加了食品的保质期。 用于执行上述方法的装置具有将流体涂层材料施加到表面的施加装置; 用光照亮固体涂层的光源; 以及激励光源的通电装置。

    Prevention of electrochemical and electrophoretic effects in
high-strength-electric-field pumpable-food-product treatment systems
    14.
    发明授权
    Prevention of electrochemical and electrophoretic effects in high-strength-electric-field pumpable-food-product treatment systems 失效
    在高强度电场可泵送食品处理系统中预防电化学和电泳效应

    公开(公告)号:US5447733A

    公开(公告)日:1995-09-05

    申请号:US354233

    申请日:1994-12-08

    IPC分类号: A23L3/32

    CPC分类号: A23L3/32 Y10S99/14

    摘要: Microorganisms are deactivated in a food product using an electrode placed into electrical contact with the food product. A current signal is applied to the electrode during a specified time period, causing a deactivating charge to build up on the first electrode. An electrical field results from the deactivating charge having an electric field strength of at least 5,000 volts/cm. Substantially all of a residual charge is removed from the first electrode during a discharge period, such that an approximately zero net charge is delivered to the first electrode following the discharge period, thereby reducing electrophoretic side-effects. The current signal causes an electrical double layer at the electrode to charge to a prescribed voltage. One embodiment, the prescribed voltage does not exceed a reaction voltage of a prescribed reacting material species for more than a prescribed threshold period, thereby reducing electrochemical reactions within the food product.

    摘要翻译: 使用与食品电气接触的电极在食品中使微生物失活。 电流信号在规定的时间内被施加到电极,导致在第一电极上形成去激活电荷。 电场的电场强度至少为5000伏/厘米,导致电场产生。 在放电期间,基本上所有的剩余电荷都从第一电极去除,使得在放电周期之后将大约零的净电荷输送到第一电极,从而降低电泳副作用。 电流信号使电极处的双电层充电到规定的电压。 一个实施方案中,规定的电压不超过规定的反应物质的反应电压超过规定的阈值时间,从而减少食品内的电化学反应。

    Deactivation of organisms using high-intensity pulsed polychromatic light
    15.
    发明授权
    Deactivation of organisms using high-intensity pulsed polychromatic light 失效
    使用高强度脉冲多色光灭活生物

    公开(公告)号:US06228332B1

    公开(公告)日:2001-05-08

    申请号:US09025210

    申请日:1998-02-18

    IPC分类号: B01J1908

    摘要: A system of deactivating microorganisms in water involves illuminating the microorganisms using at least one short-duration, high-intensity pulse of broad-spectrum polychromatic light. The system includes a watertight housing having an inlet port and an outlet port for the flow water. A tubular light source for deactivating microorganisms and a tubular baffle for directing the water flow are positioned within the watertight housing. Waters enters the inlet port and flows between the watertight housing and the tubular baffle in one direction, around the end of the tubular baffle and back through the center of the tubular baffle in a second direction exiting the outlet port. In one embodiment, the inlet and outlet ports are positioned at the same end of the watertight housing. In a another embodiment, the inlet port is at the end of the watertight housing and the outlet port extends radially from the tubular baffle through the side of the watertight housing. Additionally, a removable recirculating hose may be connected from the inlet port to the outlet port for recirculating the water. A quartz jacket filled with a cooling material may be used around the tubular light source to provide cooling to the light source and spectral filtering of the light emitted from the light source. The inner surface of the baffle may be reflectorized to reflect light from the light source.

    摘要翻译: 使水中的微生物失活的系统包括使用至少一种具有广谱多色光的短持续时间的高强度脉冲来照射微生物。 该系统包括具有用于流动水的入口和出口的防水壳体。 用于使微生物灭活的管状光源和用于引导水流的管状挡板定位在防水壳体内。 水进入入口并在一个方向上在一个方向上在管状挡板之间流动,围绕管状挡板的端部,并沿离开出口的第二个方向返回经过管状隔板的中心。 在一个实施例中,入口和出口定位在防水外壳的同一端。 在另一个实施例中,入口端口处于水密壳体的端部,并且出口端口从管状挡板径向延伸穿过防水壳体的一侧。 此外,可移除的循环软管可以从入口端口连接到出口,用于再循环水。 可以在管状光源周围使用填充有冷却材料的石英套,以向光源提供冷却并对从光源发射的光进行光谱过滤。 挡板的内表面可以被反射,以反射来自光源的光。

    Parametric control in pulsed light sterilization of packages and their
contents
    16.
    发明授权
    Parametric control in pulsed light sterilization of packages and their contents 失效
    包装及其内容物的脉冲光灭菌中的参数控制

    公开(公告)号:US5925885A

    公开(公告)日:1999-07-20

    申请号:US846102

    申请日:1997-05-01

    摘要: An approach for sterilizing microorganisms at a target object employs a flashlamp system including means for generating pulses of light, and for deactivating microorganisms within the target object by illuminating the target object with the pulses of light having been generated; a photo-sensitive detector positioned so as to receive a portion of each of the pulses of light as a measure of an amount of light illuminating the target object, for generating an output signal in response thereto; and a control system, coupled to the flashlamp system and the photo-sensitive detector, for determining, in response to the output signal, whether the pulses of light are sufficient to effect a prescribed level of deactivation of microorganisms in the target object. In accordance with this approach sterilizing microorganisms involves steps of generating a pulse of light; deactivating microorganisms at the target object by directing the pulse of light having been generated at the target object; receiving a portion of the pulse of light as a measure of an amount of the pulse of light illuminating the target object; generating an output signal in response to the receiving of the portion of the pulse of light; and determining; in response to the generating of the output signal, whether the pulse of light is sufficient to effect a prescribed level of deactivation of microorganisms in the target object.

    摘要翻译: 用于在目标物体上灭菌微生物的方法采用闪光灯系统,其包括用于产生光脉冲的装置,以及通过用已产生的光脉冲照射目标物体来使目标物体内的微生物失活; 光敏检测器,其被定位成接收每个所述脉冲的一部分作为照射所述目标物体的光量的量度,以响应于此产生输出信号; 以及耦合到所述闪光灯系统和所述光敏检测器的控制系统,用于响应于所述输出信号确定所述光脉冲是否足以影响所述目标对象中微生物的规定水平的失活。 根据这种方法,消毒微生物包括产生光脉冲的步骤; 通过引导已经在目标物体处产生的光的脉冲来使目标物体上的微生物失活; 接收光脉冲的一部分作为照射目标物体的光的脉冲量的量度; 响应于所述部分所述光脉冲的接收而产生输出信号; 并确定; 响应于输出信号的产生,光的脉冲是否足以影响目标对象中的微生物的规定的失活水平。

    Photocatalyst and pulsed light synergism in deactivation of contaminants
    17.
    发明授权
    Photocatalyst and pulsed light synergism in deactivation of contaminants 失效
    光催化剂和脉冲光协同作用使污染物失活

    公开(公告)号:US5658530A

    公开(公告)日:1997-08-19

    申请号:US626976

    申请日:1996-04-03

    申请人: Joseph E. Dunn

    发明人: Joseph E. Dunn

    摘要: An improved method and apparatus for deactivating contaminants involves illuminating one portion of the contaminants with light having frequencies within a first prescribed frequency range, resulting in the deactivating of the one portion of the contaminants, and illuminating another portion of the contaminants with light having frequencies within a second prescribed frequency range, the other portion being at a titanium dioxide supplemented surface, so as to initiate the release of a highly reactive agent in a reaction in which titanium dioxide serves as a catalyst. The highly reactive agent deactivates the other portion of the contaminants.

    摘要翻译: 用于去除污染物的改进的方法和装置包括用频率在第一规定频率范围内的光照射一部分污染物,导致一部分污染物的去活化,并且以具有频率内的光照射另一部分污染物 第二规定频率范围,另一部分在二氧化钛补充表面,以便在二氧化钛用作催化剂的反应中引发高反应剂的释放。 高反应性剂使另一部分污染物失活。

    Process for reducing levels of microorganisms in pumpable food products
using a high pulsed voltage system
    18.
    发明授权
    Process for reducing levels of microorganisms in pumpable food products using a high pulsed voltage system 失效
    使用高脉冲电压系统降低可泵送食品中微生物含量的方法

    公开(公告)号:US5514391A

    公开(公告)日:1996-05-07

    申请号:US481849

    申请日:1995-06-07

    摘要: The present invention is directed to methods and apparatuses for preserving fluid foodstuffs. More particularly, it is directed to methods and apparatuses for extending the shelf life of perishable fluid foodstuffs such as dairy products, fruit juices and liquid egg products, which contain significant levels of microorganisms. The improved methods and apparatuses incorporate a plurality of electric field treatment zones with cooling units between each pair of treatment zones in order to maintain the temperature of the pumpable foodstuff at a level at which microorganisms are killed in sufficient numbers and at which changes in the flavor, appearance, odor, or functionality of the foodstuff remain within acceptable ranges. For a comparable microorganism kill, foodstuffs prepared by the present process have significantly higher quality than foodstuffs prepared with standard thermal processes (e.g., ultra-high temperature pasteurization).

    摘要翻译: 本发明涉及用于保存流体食品的方法和装置。 更具体地,涉及用于延长含有显着水平微生物的易腐食品如乳制品,果汁和液体蛋制品的保质期的方法和装置。 改进的方法和装置包括多个电场处理区域,每个处理区域之间具有冷却单元,以便将可泵送食品的温度保持在足够数量的杀死微生物的水平,并且其中的风味变化 ,食品的外观,气味或功能保持在可接受的范围内。 对于相当的微生物杀灭,通过本方法制备的食品比用标准热处理(例如超高温巴氏消毒)制备的食品具有显着更高的质量。

    Prevention of electrode fouling in high electric field systems for
killing microorganisms in food products
    19.
    发明授权
    Prevention of electrode fouling in high electric field systems for killing microorganisms in food products 失效
    防止高电场系统中的电极污染,杀死食品中的微生物

    公开(公告)号:US5393541A

    公开(公告)日:1995-02-28

    申请号:US178745

    申请日:1994-01-06

    IPC分类号: A23L3/32

    CPC分类号: A23L3/32 Y10S99/14

    摘要: Microorganisms are killed in a food product using an electrode placed into electrical contact with the food product, a charge supply circuit, a switch that selectively couples the charge supply circuit to the electrode, and a controller. The switch first configures the charge supply circuit so as to deliver a charge to the electrode when the switch assumes a first state, and next configures the charge supply circuit so as to absorb the charge from the electrode when the switch assumes a second state. As a result, a net charge delivered to the electrode is substantially zero. The controller controls the switch to sequentially assume the first and second states. The delivery of the zero net charge prevents the fouling of the electrode.

    摘要翻译: 微生物在食品中被杀死,使用与食品电接触的电极,充电供应电路,选择性地将电荷供应电路连接到电极的开关和控制器。 开关首先配置充电电路,以便当开关处于第一状态时向电极输送电荷,接下来构成充电电路,以便当开关处于第二状态时从电极吸收电荷。 结果,输送到电极的净电荷基本为零。 控制器控制开关顺序地呈现第一和第二状态。 零净电荷的传送可防止电极结垢。